Vitenskapelig artikkel

• Gundersen, Ted Ørjan Seim; Torbergsen, Erik Andre; Balakin, Boris et al. (2024). Improved Prediction of Pump Performance Through the Rotation-Curvature Correction - An Experimental and Numerical Study of a Low-Specific-Speed Helico-Axial Compression Cell in Series. (ekstern lenke)
• Gundersen, Ted Ørjan Seim; Moënne-Loccoz, Victor; Dupoiron, Marine et al. (2023). Visualization of Unsteady Flow in a Multistage Helico-Axial Pump. (ekstern lenke)
• Saparbayeva, Nazerke; Chang, Yu-Fen; Kosinski, Pawel Jan et al. (2023). Cohesive collisions of particles in liquid media studied by CFD-DEM, video tracking, and Positron Emission Particle Tracking. (ekstern lenke)
• Hoffmann, Alex Christian; Fonnes, Daniel Gilje; Chang, Yu-Fen (2023). Flowpattern in hydrocyclones, numerical simulations with experimental verification. (ekstern lenke)
• Hoffmann, Alex Christian (2023). Signs of stress. (ekstern lenke)
• Struchalin, Pavel; Øye, Vegar Hovdenakk; Kosinski, Pawel Jan et al. (2022). Flow loop study of a cold and cohesive slurry. Pressure drop and formation of plugs. (ekstern lenke)
• Svensen, Ellinor Arguilla; Hoffmann, Alex Christian (2020). First and second-order models for the vortex length in cylinder-on-cone cyclones based on large-eddy simulations. (ekstern lenke)
• Hoffmann, Alex Christian (2020). A note on the multiphase balance equations. (ekstern lenke)
• Thambiraj, Nelson; Warnhus, I.; Suciu, C. et al. (2020). Single-Cell Tests to Explore the Reliability of Sofc Installations Operating Offshore. (ekstern lenke)
• Ghaffari, Maryam; Hoffmann, Alex Christian; Skjold, Trygve et al. (2019). A brief review on the effect of particle size on the laminar burning velocity of flammable dust: application in a CFD tool for industrial applications. (ekstern lenke)
• Hoffmann, Alex Christian; Heggland, Åshild Skorpen; Chang, Yu-Fen (2019). Positron emission particle tracking and CFD investigation of hydrocyclones acting on liquids of varying viscosity. (ekstern lenke)
• Dries, Huub; Hoffmann, Alex Christian (2019). A correlation giving improved description of the capacity and efficiency of vane-type gas-liquid separators. (ekstern lenke)
• Hoffmann, Alex Christian; Pletten, Sandra Stang; Mania, Mirko (2019). A study of transfer rates of phenols from caustic to crude oil. (ekstern lenke)
• Suciu, C.; Dorolti, E.; Hoffmann, Alex Christian (2018). Physico-chemical properties of nanocrystalline YSZ powders as a function of doping level and electrical properties after sintering. (ekstern lenke)
• Balakin, Boris; Adamsen, Tom Christian Holm; Chang, Yu-Fen et al. (2017). Non-invasive studies of multiphase flow in process equipment. Positron emission particle tracking technique.. (ekstern lenke)
• Karakitsiou, Stamatina; Holst, Bodil; Hoffmann, Alex Christian (2017). Pressure-Driven Gas Flow through Nano-Channels at High Knudsen Number. (ekstern lenke)
• Thambiraj, Nelson; Suciu, C.; Warnhus, I. et al. (2017). Effect of Oxygen Depletion to the Cathode on the Working of Solid Oxide Fuel Cells. (ekstern lenke)
• Rubio, Diego; Suciu, C.; Warnhus, I. et al. (2017). Tape Casting of Lanthanum Chromite for Solid Oxide Fuel Cell Interconnects. (ekstern lenke)
• Thambiraj, Nelson; Suciu, C.; Warnhus, I. et al. (2017). SOFC Cathode Degradation due to Salt Contamination. (ekstern lenke)
• Karakitsiou, Stamatina; Holst, Bodil; Hoffmann, Alex Christian (2016). Apparatus for measuring pressure-driven transport through channels at high Knudsen numbers. (ekstern lenke)
• Hellestø, Aslak Solvang; Ghaffari, Maryam; Balakin, Boris et al. (2016). A parametric study of cohesive particle agglomeration in a shear flow : numerical simulations by the discrete element method. (ekstern lenke)
• Balakin, Boris; Lo, Simon; Kosinski, Pawel Jan et al. (2016). Modelling agglomeration and deposition of gas hydrates in industrial pipelines with combined CFD-PBM technique. (ekstern lenke)
• Chang, Yu-Fen; Hoffmann, Alex Christian (2015). A Lagrangian study of liquid flow in a reverse-flow hydrocyclone using positron emission particle tracking. (ekstern lenke)
• Kosinski, Pawel Jan; Balakin, Boris V; Middha, Prachi et al. (2014). Collisions between particles in multiphase flows: Focus on contact mechanics and heat conduction. (ekstern lenke)
• Marthinussen, Svein-Arne; Chang, Yu-Fen; Balakin, Boris V et al. (2014). Removal of particles from highly viscous liquids with hydrocyclones. (ekstern lenke)
• Sæthre, Bjørn Steen; Hoffmann, Alex Christian; Spoel, David van der (2014). Order Parameters and Algorithmic Approaches for Detection and Demarcation of Interfaces in Hydrate−Fluid and Ice−Fluid Systems. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2014). Coupling STAR-CD with a population-balance technique based on the classes method. (ekstern lenke)
• Balakin, Boris V; Alyaev, Sergey; Hoffmann, Alex Christian et al. (2013). Micromechanics of agglomeration forced by the capillary bridge: The restitution of momentum. (ekstern lenke)
• Chang, Yu-Fen; Adamsen, Tom Christian; Pisarev, Gleb et al. (2013). PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies. (ekstern lenke)
• Middha, Prachi; Balakin, Boris V; Leirvåg, Line Kristin et al. (2013). PEPT - A novel tool for investigation of pneumatic conveying. (ekstern lenke)
• Kosinski, Pawel Jan; Balakin, Boris V; Middha, Prachi et al. (2013). Heat conduction during collisions of cohesive and viscoelastic particles. (ekstern lenke)
• Balakin, Boris V; Notøy, Iryna; Hoffmann, Alex Christian et al. (2012). The formation of deposit in a magnetic fluid: Numerical and experimental study. (ekstern lenke)
• Chang, Yu-Fen; Adamsen, Tom Christian; Hoffmann, Alex Christian (2012). Using a PET Camera to Track Individual Phases in Process Equipment with High Temporal and Spatial Resolutions: Algorithm Development. (ekstern lenke)
• Ghaffari, Maryam; Vestvik, Anders; Balakin, Boris V et al. (2012). Deposition capabilities of turbulent particle-laden flow passing an obstacle using experiment and CFD. (ekstern lenke)
• Sæthre, Bjørn Steen; Spoel, David van der; Hoffmann, Alex Christian (2012). Free energy of separation of structure II clathrate hydrate in water and a light oil. (ekstern lenke)
• Pisarev, Gleb; Hoffmann, Alex Christian (2012). Effect of the 'end of the vortex' phenomenon on the particle motion and separation in a swirl tube separator. (ekstern lenke)
• Pisarev, Gleb; Gjerde, Vidar; Balakin, Boris V et al. (2012). Experimental and computational study of the "end of the vortex" phenomenon in reverse-flow centrifugal separators. (ekstern lenke)
• Ghaffari, Maryam; Chang, Yu-Fen; Balakin, Boris V et al. (2012). CFD Modeling of PEPT Results of Particle Motion Trajectories in a Pipe over an Obstacle. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2012). The collision efficiency in a shear flow. (ekstern lenke)
• Chang, Yu-Fen; Ilea, Catalin Grigore; Aasen, Øystein Lee et al. (2011). Particle flow in a hydrocyclone investigated by positron emission particle tracking. (ekstern lenke)
• Balakin, Boris V; Notøy, Iryna; Hoffmann, Alex Christian et al. (2011). CFD model for the magnetically forced formation of an obstructive deposit in a magnetorheological fluid. (ekstern lenke)
• Pisarev, Gleb; Hoffmann, Alex Christian; Peng, Weiming et al. (2011). Large Eddy Simulation of the vortex end in reverse-flow centrifugal separators. (ekstern lenke)
• Tikkanen, Hanna-Mari Viktoria; Suciu, Crina S.; Wærnhus, Ivar et al. (2011). Examination of the co-sintering process of thin 8YSZ films obtained by dip-coating on in-house produced NiO-YSZ. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2011). Numerical study on the dynamics of a jet-vortex interaction. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2011). Experimental study and computational fluid dynamics modeling of deposition of hydrate particles in a pipeline with turbulent water flow. (ekstern lenke)
• Pisarev, Gleb; Hoffmann, Alex Christian (2011). Certainties and uncertainties in CFD prediction of the end of the vortex behaviour in centrifugal separators. (ekstern lenke)
• Tikkanen, Hanna-Mari Viktoria; Suciu, Crina S.; Wærnhus, Ivar et al. (2011). Dip-coating of 8YSZ nanopowder for SOFC applications. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2011). Extended hard-sphere model and collisions of cohesive particles. (ekstern lenke)
• Chang, Yu-Fen; Pisarev, Gleb; Hoffmann, Alex Christian (2011). Numerical Study of the "End of the Vortex" Phenomenon in a Hydrocyclone Separator. (ekstern lenke)
• Peng, Weiming; Christensen, Dorthe; Jacobsson, Siri et al. (2010). Studies of the flow in and around gas dedusters and demisters using neutrally buoyant tracer. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2010). Quantification of the adhesive impulse for the extended hard-sphere model. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan et al. (2010). Combined CFD/Population Balance Model for gas hydrate particle size prediction in turbulent pipeline flow. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2010). Effects of heat sources on the performance of a planar solid oxide fuel cell. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2010). Transport, chemical and electrochemical processes in a planar SOFC: Detailed three-dimensional modeling. (ekstern lenke)
• Balakin, Boris V; Pedersen, Håkon; Kilinc, Ziya et al. (2010). Turbulent flow of freon R11 hydrate slurry. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan et al. (2010). Eulerian-Eulerian CFD model for the sedimentation of spherical particles in suspensions with high particle concentrations. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2010). An extension of the hard-sphere particle-particle collision model to study agglomeration. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2010). Population Balance Model for Nucleation, Growth, Aggregation, and Breakage of Hydrate Particles in Turbulent Flow. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan et al. (2010). Turbulent flow of hydrates in a pipeline of complex configuration. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2009). Numerical analysis of a planar anode-supported SOFC with composite electrodes. (ekstern lenke)
• Mæland, Dagfinn; Suciu, Crina S.; Wærnhus, Ivar et al. (2009). Sintering of 4YSZ (ZrO2+4 mol% Y2O3) nanoceramics for solid oxide fuel cells (SOFCs), their structure and ionic conductivity. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2009). The effect of polydispersity on dust lifting behind shock waves. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2009). Extension of the hard-sphere particle-wall collision model to account for particle deposition. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2009). Modeling of transport, chemical and electrochemical phenomena in a cathode-supported SOFC. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2009). Jet-vortex interaction: a numerical study. (ekstern lenke)
• Suciu, Crina S.; Erichsen, Egil Severin; Hoffmann, Alex Christian et al. (2009). Modified sol-gel method used for obtaining SOFC electrolyte materials. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2009). Detailed modeling of an anode-supported solid oxide fuel cell using a fully three-dimensional approach. (ekstern lenke)
• Suciu, Crina S.; Vik, Arild; Goga, Firuta et al. (2009). Physico-chemical characterization of 8ysz nanoparticles by modified sol-gel method. (ekstern lenke)
• Kosinski, Pawel; Kosinska, Anna Dorota; Hoffmann, Alex Christian (2009). Simulation of solid particles behaviour in a driven cavity flow. (ekstern lenke)
• Kosinski, Pawel Jan; Kosinska, Anna; Hoffmann, Alex Christian (2009). Simulation of solid particles behaviour in a driven cavity flow. (ekstern lenke)
• Asserson, Ragnhild Brandsæter; Hoffmann, Alex Christian; Høiland, Sylvi et al. (2009). Interfacial tension measurement of freon hydrates by droplet deposition and contact angle measurements. (ekstern lenke)
• Pisarev, Gleb; Hoffmann, Alex Christian; Peng, Weiming et al. (2009). Large eddy simulation of the vortex end in reverse-flow centrifugal separators. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2008). Numerical modeling of solid oxide fuel cells. (ekstern lenke)
• Suciu, Crina S.; Hoffmann, Alex Christian; Vik, Arild et al. (2008). Effect of calcination conditions and precursor proportions on the properties of YSZ nanoparticles obtained by modified sol-gel route. (ekstern lenke)
• Suciu, Crina S.; Hoffmann, Alex Christian; Dorolti, Eugen et al. (2008). NiO/YSZ nanoparticles obtained by new sol-gel route. (ekstern lenke)
• Austrheim, Trond; Gjertsen, Lars H.; Hoffmann, Alex Christian (2008). Experimental investigation of the performance of a large-scale scrubber operating at elevated pressure on live natural gas. (ekstern lenke)
• Austrheim, Trond; Gjertsen, Lars H.; Hoffmann, Alex Christian (2008). An experimental investigation of scrubber internals at conditions of low pressure. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2008). Three-dimensional simulation of a dust lifting process with varying parameters. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2008). Simulation of a dust lifting process with rough walls. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan et al. (2008). Eulerian-Eulerian simulation of sedimentation of uniformly-sized, non-Brownian spheres in viscous fluids. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2008). Influence of collision algorithm parameters on statistical results of dust lifting simulations. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2008). Numerical modelling of a solid oxide fuel cells: a charge diffusion-based model. (ekstern lenke)
• Gottschalk, Timo; Dehling, Herold G.; Hoffmann, Alex Christian (2008). Multiphase stochastic model for fluidized beds. (ekstern lenke)
• Suciu, Crina S.; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2008). Obtaining YSZ nanoparticles by the sol-gel method with sucrose and pectin as organic precursors. (ekstern lenke)
• Kosinski, Pawel; Kosinska, Anna Dorota; Hoffmann, Alex Christian (2007). Consequences of particle-particle interaction in a 2-D square domain. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2007). An Eulerian-Lagrangian model for dense particle clouds. (ekstern lenke)
• Peng, Weiming; Hoffmann, Alex Christian; Dries, Huub et al. (2007). Reverse-flow centrifugal separators in parallel: Performance and flow pattern. (ekstern lenke)
• Dehling, Herold G.; Dechsiri, Chutima; Gottschalk, Timo et al. (2007). A stochastic model for mixing and segregation in slugging fluidized beds. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2007). Numerical Simulation of Electrochemical and Transport Processes in Solid Oxide Fuel Cells. (ekstern lenke)
• Austrheim, Trond; Gjertsen, Lars H.; Hoffmann, Alex Christian (2007). Re-entrainment correlations for demisting cyclones acting at elevated pressures on a range of fluids. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2007). Dust Lifting Simulations with Particles of Distributed Sizes. (ekstern lenke)
• Austrheim, Trond; Gjertsen, Lars H.; Hoffmann, Alex Christian (2007). Is the Souders-Brown equation sufficient for scrubber design? An experimental investigation at elevated pressure with hydrocarbon fluids. (ekstern lenke)
• Suciu, Crina S.; Hoffmann, Alex Christian; Vik, Arild et al. (2007). Fuel cells and nanoparticles. (ekstern lenke)
• Kosinski, Pawel Jan; Kosinska, Anna; Hoffmann, Alex Christian (2007). Consequences of particle-particle interaction in a 2D square domain. (ekstern lenke)
• Schaafsma, Stefan H.; Marx, Tom; Hoffmann, Alex Christian (2006). Investigation of the particle flowpattern and segregation in tapered fluidized bed granulators. (ekstern lenke)
• Spoel, D van der; Wensink, Erik Johannes; Hoffmann, Alex Christian (2006). Lifting a wet glass from a table: A microscopic picture. (ekstern lenke)
• Hoffmann, Alex Christian; Peng, Weiming; Dries, H et al. (2006). Effect of pressure recovery vanes on the performance of a swirl tube, with emphasis on the flow pattern and separation efficiency. (ekstern lenke)
• Jacobsson, Siri; Austrheim, Trond; Hoffmann, Alex Christian (2006). Experimental and computational fluid dynamics investigation of the flow in and around once-through swirl tubes. (ekstern lenke)
• Schaafsma, SH; Vonk, P; Kossen, NWF et al. (2006). A model for the spray zone in early-stage fluidized bed granulation. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2006). An investigation of the consequences of primary dust explosions in interconnected vessels. (ekstern lenke)
• Gottschalk, T; Dehling, HG; Hoffmann, Alex Christian (2006). Danckwerts' law for mean residence time revisited. (ekstern lenke)
• Suciu, Crina S.; Gagea, L.ucia; Hoffmann, Alex Christian et al. (2006). Sol-gel production of zirconia nanoparticles with a new organic precursor. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2005). Dust explosions in connected vessels: Mathematical modelling. (ekstern lenke)
• Dechsiri, Chutima; Zwan, EA Van der; Dehling, Herold G. et al. (2005). Dispersion of particle pulses in fluidized beds measured by positron emission tomography. (ekstern lenke)
• Dechsiri, Chutima; Ghione, A; Wiel, F van de et al. (2005). Positron emission tomography applied to fluidization engineering. (ekstern lenke)
• Hoffmann, Alex Christian; Dechsiri, Chutima; Wiel, F van de et al. (2005). PET investigation of a fluidized particle: spatial and temporal resolution and short term motion. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian; Klemens, R. (2005). Dust lifting behind shock waves: comparison of two modelling techniques. (ekstern lenke)
• Ritherdon, J; Dechsiri, Chutima; Jones, AR et al. (2005). On suitability of novel fluidised bed technique for separation of metallic powders during commercial powder metallurgical processing. (ekstern lenke)
• Peng, Weiming; Hoffmann, Alex Christian; Dries, Huub W.A. et al. (2005). Neutrally boyant tracer in gas cleaning equipment. A case study. (ekstern lenke)
• Peng, Weiming; Hoffmann, Alex Christian; Dries, Huub et al. (2005). Experimental study of the vortex end in centrifugal separators: The nature of the vortex end. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2005). Modelling of dust lifting using the Lagrangian approach. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2005). Mathematical modelling of dust explosions in interconnected vessels. (ekstern lenke)
• Peng, Weiming; Hoffmann, Alex Christian; Dries, Huub (2004). Separation characteristics of swirl-tube dust separators. (ekstern lenke)
• Cioffi, Mario; Ganzeveld, Klazien J.; Hoffmann, Alex Christian et al. (2004). A rheokinetic study of bulk free radical polymerization performed with a helical barrel rheometer. (ekstern lenke)
• Wensink, Erik Johannes; Hoffmann, Alex Christian; Maaren, P.J. van et al. (2003). Dynamic properties of water/alcohol mixtures studied by computer simulation. (ekstern lenke)
• Biggs, C.A.; Sanders, C.; Scott, A.C. et al. (2003). Coupling granule properties and granulation rates in high-shear granulation. (ekstern lenke)
• Bosma, J.C.; Hoffmann, Alex Christian (2003). On the capacity of continuous powder classification in a gas fluidized bed with horizontal baffles. (ekstern lenke)
• Reuvekamp, R.J.; Ray, M.B.; Hoffmann, Alex Christian (2002). Deposition of Fine Powder in Horizontal Pipelines and Bends. (ekstern lenke)
• Peng, W.; Hoffmann, Alex Christian; Boot, P.J.A.J. et al. (2002). Flowpattern in Reverse Flow Centrifugal Separators. (ekstern lenke)
• Cioffi, M.; Ganzeveld, K.J.; Hoffmann, Alex Christian et al. (2002). Rheokinetics of linear polymerization. A literature review. (ekstern lenke)
• Peng, W.; Boot, P.J.A.J.; Hoffmann, Alex Christian et al. (2001). Flow in the inlet region in tangential inlet cyclones. (ekstern lenke)
• Cioffi, M.; Janssen, L.P.B.M.; Hoffmann, Alex Christian (2001). Instabilities in free radical polymerization. (ekstern lenke)
• Cioffi, M.; Janssen, L.P.B.M.; Hoffmann, Alex Christian (2001). Reducing the gel effect in free radical polymerization. (ekstern lenke)
• Cioffi, M.; Hoffmann, Alex Christian; Janssen, L.P.B.M. (2001). Rheokinetics and the influence of shear rate on the Trommsdorff (gel) effect during free radical polymerization. (ekstern lenke)
• Hoffmann, Alex Christian; Groot, M. de; Peng, W. et al. (2001). Advantages and risks in increasing cyclone separator length. (ekstern lenke)

Vitenskapelig foredrag

• Chang, Yu-Fen; Balakin, Boris; Hoffmann, Alex Christian (2024). Investigating miniature hydrocyclones for enhanced bioprocessing efficiency. (ekstern lenke)
• Chang, Yu-Fen; Balakin, Boris; Hoffmann, Alex Christian (2023). Measuring multiphase flow in miniature devices using PEPT. (ekstern lenke)
• Hoffmann, Alex Christian; Fonnes, Daniel; Chang, Yu-Fen (2023). Flowpattern in hydrocyclones: numerical simulations with experimental verification. (ekstern lenke)
• Chang, Yu-Fen; Balakin, Boris; Hoffmann, Alex Christian (2023). Advancements in Positron Emission Particle Tracking: Unveiling Complex Flow Patterns in Miniature Multiphase Flow Devices. (ekstern lenke)
• Hoffmann, Alex Christian; Chang, Yu-Fen (2023). Lagrangian particle tracking in confined, strongly swirling flow in hydrocyclones: comparison of large-eddy simulations with experiment. (ekstern lenke)
• Balakin, Boris; Hellestø, Aslak Solvang; Kosinski, Pawel Jan et al. (2021). Multiphase CFD Models of Agglomeration and Deposition in Hydrate Slurries. (ekstern lenke)
• Hoffmann, Alex Christian (2019). PEPT at the University of Bergen. (ekstern lenke)
• Dries, Huub W.A.; Hoffmann, Alex Christian (2019). Synergy from a University / Industry Partnership Leading to Improved Gas/Particulate-Separators. (ekstern lenke)
• Ghaffari, Maryam; Skjold, Trygve; Mauri, Lorenzo et al. (2018). Turbulence modulation modelling in the CFD simulator FLACS-DustEx. (ekstern lenke)
• Ghaffari, Maryam; Skjold, Trygve; Eckhoff, Rolf Kristian et al. (2018). Effect of particle size on burning velocity calculation in FLACS-DustEx. (ekstern lenke)
• Ghaffari, Maryam; Mauri, Lorenzo; Skjold, Trygve et al. (2017). Improved modelling of particle-laden flow in the CFD simulator FLACS-DustEx. (ekstern lenke)
• Balakin, Boris; Adamsen, Tom Christian Holm; Chang, Yu-Fen et al. (2016). Non-invasive studies of multiphase flow in process equipment. Positron emission particle tracking technique. (ekstern lenke)
• Balakin, Boris V; Kosinski, Pawel Jan; Kartushinsky, Alexander et al. (2016). CFD-PBM modelling of agglomeration and deposition in petroleum industry. (ekstern lenke)
• Hoffmann, Alex Christian; Karakitsiou, Stamatina; Holst, Bodil (2016). Exact solution for the axial pressure drop in cylindrical isothermal channels with Maxwell slip flow. (ekstern lenke)
• Middha, Prachi; Balakin, Boris V; Hoffmann, Alex Christian et al. (2013). PEPT and CFD investigation of lean-phase pneumatic conveying through a bend. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2013). Restitution of momentum during interparticle collision affected by liquid bridge. (ekstern lenke)
• Chang, Yu-Fen; Adamsen, Tom Christian; Hoffmann, Alex Christian (2012). Using a PET camera to track individual phases in process equipment with high temporal and spatial resolutions: Algorithm development. (ekstern lenke)
• Chang, Yu-Fen; Skorpen, Åshild; Hoffmann, Alex Christian (2012). Detecting anomalies in the separation process in a hydrocyclone using a medical PET scanner. (ekstern lenke)
• Chang, Yu-Fen; Ilea, Catalin Grigore; Aasen, Øystein Lee et al. (2011). Particle trajectories in a hydrocyclone measured by PEPT. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2011). Particle-particle agglomeration and use of the hard-sphere model. (ekstern lenke)
• Tikkanen, Hanna-Mari Viktoria; Suciu, C.; Wærnhus, I et al. (2011). Fabrication and cell performance of anode-supported SOFC made of in-house produced NiO-YSZ nano-composite powder. (ekstern lenke)
• Sæthre, Bjørn Steen; Hoffmann, Alex Christian; Spoel, David van der (2011). Order parameters for detection and demarkation of interfaces in hydrate-fluid and ice-fluid systems. (ekstern lenke)
• Chang, Yu-Fen; Pisarev, Gleb; Hoffmann, Alex Christian (2011). PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2010). Ordering of monosized particles during simulations of a fluid-solid flow under shear. (ekstern lenke)
• Suciu, C. S.; Hoffmann, Alex Christian; Wærnhus, I (2010). A flexible, cost-effective production method for high-quality nanoparticles. (ekstern lenke)
• Suciu, C.; Hoffmann, Alex Christian; Dorolti, E. et al. (2010). Properties of 3-15 mol% YSZ materials. (ekstern lenke)
• Chang, Yu-Fen; Hoffmann, Alex Christian; Ilea, Catalin Grigore et al. (2010). Particle flow in a hydrocyclone investigated by radioactive particle tracking. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2009). Fully three-dimensional modeling of Solid Oxide Fuel Cells. (ekstern lenke)
• Balakin, Boris V; Hoffmann, Alex Christian; Kosinski, Pawel Jan (2009). Computational fluid dynamic model of gas hydrate deposition in a turbulent flow. (ekstern lenke)
• Sæthre, Bjørn Steen; Hoffmann, Alex Christian (2008). Surface-fluctuations on clathrate hydrate structure I and II slabs in selected environments. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2008). Numerical study of an SOFC with direct internal reforming using charge diffusion-based model. (ekstern lenke)
• Barth, Tanja; Talatori, Shiva; Erstad, Kristin et al. (2008). Hydrates in petroleum production-assessment of plug risk. Project HYPERION enters it s third and final year. (ekstern lenke)
• Suciu, Crina S.; Mæland, Dagfinn; Hoffmann, Alex Christian et al. (2008). The Use of Nanoparticles for Solid Oxide Fuel Cell Components. (ekstern lenke)
• Suciu, Crina S.; Mæland, Dagfinn; Hoffmann, Alex Christian et al. (2008). Priorities in Material Design for Solid Oxide Fuel Cells -With Emphasis on the Anode and the Electrolyte. (ekstern lenke)
• Suciu, Crina S.; Hoffmann, Alex Christian; Goga, A. et al. (2008). NiO nanoparticles for SOFC anodes. Comparison of two synthesis methods. (ekstern lenke)
• Kosinski, Pawel; Kosinska, Anna Dorota; Hoffmann, Alex Christian (2007). Numerical simulation of particle-flow interactions: formation of agglomerates. (ekstern lenke)
• Kosinski, Pawel Jan; Kosinska, Anna; Hoffmann, Alex Christian (2007). Numerical simulation of particle-flow interactions: formation of agglomerates. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2007). Simulation of a dust lifting process in a two-dimensional domain with rough walls. (ekstern lenke)
• Peng, Weiming; Jacobsson, Siri; Hoffmann, Alex Christian (2007). Neutrally buoyant tracer in gas cleaning equipment. A case study. (ekstern lenke)
• Kosinski, Pawel Jan; Kosinska, Anna; Hoffmann, Alex Christian (2006). Fluid-particle flows in a driven cavity. (ekstern lenke)
• Suciu, Crina Silvia; Hoffmann, Alex Christian (2006). Sol-Gel Production of ZrO2 and YSZ with a New Organic Precursor. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2006). 3-D Eulerian-Lagrangian Simulation of Dust Lifting. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2006). Direct numerical simulation of particle-fluid flow: The state-of-the-art. (ekstern lenke)
• Hoffmann, Alex Christian (2005). The physics of cyclones. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2004). Mathematical modelling of dust explosions in interconnected vessels. (ekstern lenke)
• Hoffmann, Alex Christian (2003). Brændselcellekursus. (ekstern lenke)
• Hoffmann, Alex Christian; Dechsiri, C.; Wiel, F. van de et al. (2003). Tracking individual particles in a fluidized bed using a medical PET-Camera. (ekstern lenke)
• Dechsiri, C.; Wiel, F. van de; Dehling, H.G. et al. (2003). Positron emission tomography applied to fluidization engineering. (ekstern lenke)
• Hoffmann, Alex Christian (2002). Gas Cyclone Separators -- Potential and Limitations. (ekstern lenke)
• Hoffmann, Alex Christian (2002). Gas Cyclone Separators -- Potential and Limitations. (ekstern lenke)
• Apol, M.E.F.; Berendsen, H.J.C.; Mark, A.E. et al. (2002). Interparticle Forces for DEM by MD Simulations. (ekstern lenke)
• Dechsiri, C.; Dehling, H.G.; Hoffmann, Alex Christian (2002). Stochastic Model for Fluidization. (ekstern lenke)
• Hoffmann, Alex Christian (2002). Brenselscelleteknologi. (ekstern lenke)
• Wright, P.C.; Makkawi, Y.T.; Meeyoo, V. et al. (2002). Observation of Cross-Sectional Non-Uniformity in Fluidized Beds Using Two Different Imaging Techniques. (ekstern lenke)
• Bosma, J.C.; Hoffmann, Alex Christian (2002). Feasibility Study of Particle Classification in Fluidized Beds with Internal Baffles. (ekstern lenke)
• Dechsiri, C.; Zwan, E. van der; Bosma, J.C. et al. (2002). Positron Emission Tomography (PET) for Fluidization. (ekstern lenke)
• Biggs, C.A.; Sanders, C.F.W.; Scott, A.C. et al. (2001). Coupling granule properties and granulation rates in high-shear granulation. (ekstern lenke)
• Dechsiri, C.; Bosma, J.C.; Hoffmann, Alex Christian et al. (2001). A Stochastic Model for Particle Mixing and Segregation in Fluidized Beds with Baffles. (ekstern lenke)
• Peng, W.; Hoffmann, Alex Christian; Boot, P.J.A.J. et al. (2001). Determining the best modelling assumptions for cyclones and swirl tubes by CFD and LDA. (ekstern lenke)
• Hoffmann, Alex Christian (2001). Hvordan levere kompetence til gasindustrien?. (ekstern lenke)
• Torres, CA; Hoffmann, Alex Christian; Kloss-Quiroga, B et al. (1999). Towards an European Masters in International: the experience of TropEdEurope since 1996. (ekstern lenke)

Fagartikkel

• Gundersen, Ted Ørjan Seim; Dupoiron, Marine; Moënne-Loccoz, Victor et al. (2022). Commissioning a New Multiphase Pump Visualization Test Rig to Investigate the Internal Flow Field and its Connection with Pump Performance. (ekstern lenke)

Poster

• Ghaffari, Maryam; Skjold, Trygve; Hoffmann, Alex Christian et al. (2019). Effect of particle size on burning velocity calculation in FLACS-DustEx. (ekstern lenke)
• Ghaffari, Maryam; Hoffmann, Alex Christian; Skjold, Trygve et al. (2019). A review of the effect of particle size and particle concentratyion on burning velocity calculation in FLACS-DustEx: a simplified approach. (ekstern lenke)
• rubio, diego; Suciu, Crina S.; waernhus, Ivar et al. (2016). Tape Casting of Lanthanum Chromite. (ekstern lenke)
• Kosinski, Pawel Jan; Balakin, Boris V; Middha, Prachi et al. (2013). Heat conduction between colliding particles. (ekstern lenke)
• Middha, Prachi; Balakin, Boris V; Hoffmann, Alex Christian et al. (2013). PEPT investigation of pneumatic conveying through a bend. (ekstern lenke)
• Marthinussen, Svein-Arne; Chang, Yu-Fen; Balakin, Boris V et al. (2013). Hydrocyclones working on highly viscous liquids. (ekstern lenke)
• Ghaffari, Maryam; Chang, Yu-Fen; Balakin, Boris V et al. (2012). Studying Particle Motion Trajectories in a Pipe over an Obstacle Using PEPT and CFD. (ekstern lenke)
• Tikkanen, Hanna-Mari Viktoria; Suciu, C.; Wærnhus, I et al. (2010). Electrophoretic deposition of 8YSZ on cathode substrate. (ekstern lenke)
• Suciu, Crina S.; Wærnhus, I; Tikkanen, Hanna et al. (2009). Nanoparticlebased, scandium-doped materials for SOFC electrolytes; production and performance. (ekstern lenke)
• Suciu, C.; Hoffmann, Alex Christian; Vik, A. et al. (2008). Optimizing sol-gel produced NiO nanopowder as precursor for SOFC anodes. (ekstern lenke)
• Ho, Thinh Xuan; Kosinski, Pawel Jan; Hoffmann, Alex Christian et al. (2008). Numerical study of a solid oxide fuel cell with direct internal methane reforming. (ekstern lenke)
• Mæland, Dagfinn; Suciu, Crina S.; Wærnhus, Ivar et al. (2008). Sintering properties of 4YSZ nanoparticles and ionic impedance of the resulting materials. (ekstern lenke)
• Suciu, C.; Mæland, D.; Hoffmann, Alex Christian et al. (2007). SOFC components from nano-particles: particle manufacture, sintering and characterization. (ekstern lenke)
• Lunev, Maxim; Hoffmann, Alex Christian; Silalahi, Sumihar (2007). Solid Oxide Fuel Cell Com- ponents Studied by Molecular Dynamics. (ekstern lenke)
• Suciu, C.; Vik, A.; Hoffmann, Alex Christian (2007). Nanoparticles for solid oxide fuel cell anodes. (ekstern lenke)
• Ilea, Catalin Grigore; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2006). Numerical simulation of dust lifting behind shock waves in a three-dimensional computational domain. (ekstern lenke)
• Kosinski, Pawel Jan; Kosinska, Anna; Hoffmann, Alex Christian (2006). Simulation of solid particles, behaviour in a driven cavity flow. (ekstern lenke)
• Wensink, Erik Johannes; Hoffmann, Alex Christian; Maaren, P.J. et al. (2004). Extensive simulation studies of alcohol in water. (ekstern lenke)
• Kosinski, Pawel Jan; Hoffmann, Alex Christian; Klemens, R. (2004). Dust lifting modelling using the Eulerian and Lagrangian approaches. (ekstern lenke)

Doktorgradsavhandling

• Karakitsiou, Stamatina; Hoffmann, Alex Christian; Holst, Bodil (2018). Experimental and theoretical study of pressure-driven transport of gases in micro and nanopores. (ekstern lenke)
• Chang, Yu-Fen; Hoffmann, Alex Christian (2016). Study of the flow in a hydrocyclone using positron emission particle tracking and computational fluid dynamics simulation. (ekstern lenke)
• Tveit, Jesper; Hoffmann, Alex Christian; Småbrekke, Arne et al. (2016). A Nonlinear Differential Equation Solver With Potential Application to Pelton Turbines. (ekstern lenke)
• Sæthre, Bjørn Steen; Hoffmann, Alex Christian; Spoel, David van der (2015). Interfacial free energies in gas-hydrate/fluid interfaces. (ekstern lenke)
• Pisarev, Gleb; Hoffmann, Alex Christian; Dijkstra, Henk Anton et al. (2011). Experimental and numerical study of the End of the Vortex phenomenon. (ekstern lenke)
• Balakin, Boris V; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2010). Experimental and theoretical study of the flow, aggregation and. (ekstern lenke)
• Ho, Thinh Xuan; Hoffmann, Alex Christian (2009). Modeling of Transport, Chemical and Electrochemical Processes in Solid Oxide Fuel Cells. (ekstern lenke)
• Ilea, Catalin Grigore; Hoffmann, Alex Christian (2008). Numerical Simulations of Dust Lifting. (ekstern lenke)
• Ilea, Crina Silvia; Hoffmann, Alex Christian (2007). New Materials for Solid Oxide Fuel Cells Based on Nanoparticles. (ekstern lenke)
• Austrheim, Trond; Hoffmann, Alex Christian (2006). Experimental Characterization of High-Pressure Natural Gas Scrubbers. (ekstern lenke)
• Wensink, Erik Johannes; Hoffmann, Alex Christian (2005). Molecular Simulations of Complex Liquids and Confined Systems. (ekstern lenke)
• Dechsiri, Chutima; Hoffmann, Alex Christian; Dehling, Herold G. (2004). Particle Transport in Fluidized Beds; Experiments and Stochastic Models. (ekstern lenke)

Faglig foredrag

• Ghaffari, Maryam; Skjold, Trygve; Wingerden, Kees van et al. (2016). A model validation framework for the dust explosion simulator FLACS-DustEx: Challenges, limitations and possibilities. (ekstern lenke)
• Suciu, C. S.; Tikkanen, Hanna-Mari Viktoria; Ho, Thinh Xuan et al. (2010). Hydrogenaktiviteter på Universitetet i Bergen. (ekstern lenke)
• Hoffmann, Alex Christian (2009). Fysikkens rolle for energispørgsmål. (ekstern lenke)
• Suciu, C. S.; Mæland, Dagfinn; Hoffmann, Alex Christian et al. (2008). Research in materials for solid oxide fuel cells. (ekstern lenke)
• Hoffmann, Alex Christian (2005). Innen den overskuelige framtid vil verdens energiforbuk mangedoplet, hvilke utfordringer byr det på? Finnes det plausible løsninger?. (ekstern lenke)
• Hoffmann, Alex Christian (2005). Energy for the future, wherefrom?. (ekstern lenke)
• Hoffmann, Alex Christian (2005). Energikilder for det næste århundrede. (ekstern lenke)
• Hoffmann, Alex Christian (2001). Brændselsceller, en anden slags elektrokemi. (ekstern lenke)

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

• Suciu, Crina S.; Dorolti, E.; Hoffmann, Alex Christian (2015). Properties of xYSZ nanoparticles and pellets with x varying from 1 to 15%. (ekstern lenke)
• Karakitsiou, Stamatina; Eder, Sabrina Daniela; Holst, Bodil et al. (2015). Design, development and testing of apparatus to study gas diffusion in nanochannels. (ekstern lenke)
• Hoffmann, Alex Christian (2011). Stochastic Modeling Techniques in Powder Technology. (ekstern lenke)

Mastergradsoppgave

• Pletten, Sandra; Hoffmann, Alex Christian (2014). An Experimental and Theoretical Study of Transfer Rates of Phenols from Caustic to Crude Oil. (ekstern lenke)
• Romsloe, Alise; Hoffmann, Alex Christian (2014). Cyclonic oil-water separator with an overflow system. (ekstern lenke)
• Balakin, Boris V; Hellestø, A.R.; Hoffmann, Alex Christian (2014). A study of solid particle agglomeration - particle by particle. (ekstern lenke)
• Eikill, Vegard; Hoffmann, Alex Christian (2010). Characterization of the anode and cathode materials for solid oxide fuel cells (SOFCs). (ekstern lenke)
• Gjerde, Vidar I.; Hoffmann, Alex Christian (2010). The Natural Vortex Length in Centrifugal Separators. (ekstern lenke)
• Aasen, Øystein Lee; Hoffmann, Alex Christian (2010). Experimental investigation of particle trajectory through an hydrocyclone using a Positron Emission Tomography (PET) scanner. (ekstern lenke)
• Dahl, Maren A.; Hoffmann, Alex Christian (2010). New experimental techniques to study the adhesion to various solid surfaces of hydrate-relevant droplets and particles. (ekstern lenke)
• Thormodsæter, Ole André; Hoffmann, Alex Christian (2008). Production and Characterization of YSZ Nanoparticles and Thin Films forPlanar Ceramic SOFC Electrolytes. (ekstern lenke)
• Mæland, Dagfinn; Hoffmann, Alex Christian (2008). Sintering and Impedance Spectroscopy Characterisation of Nanoparticle-based Functional Materials for Solid Oxide Fuel Cells. (ekstern lenke)
• Pedersen, Håkon; Hoffmann, Alex Christian (2008). Formation, Particle Size Distribution and Flow Dependence of Freon (R11) Hydrates in Multiphase Flow Systems. (ekstern lenke)
• Kilinc, Ziya; Hoffmann, Alex Christian (2008). Formation and Particle Size Distribution of Cyclopentane Hydrates in a Multiphase Flow System. (ekstern lenke)
• Asserson, Ragnhild; Hoffmann, Alex Christian (2007). Interfacial tension measurements of freon hydrates by means of droplet deposition and contact angle measurements. (ekstern lenke)
• Lie, Roger; Hoffmann, Alex Christian (2007). Horizontal particle transport in a flowing liquid. (ekstern lenke)
• Jacobsson, Siri; Hoffmann, Alex Christian (2004). Single Phase Characterization of the Verlaan Cyclone. (ekstern lenke)
• Kvinnesland, Eli; Hoffmann, Alex Christian (2004). Single-phase characterization of the inlet arrangement schoepentoeter. (ekstern lenke)
• Christensen, Dorthe; Hoffmann, Alex Christian (2004). Single-phase characterization of the new open spinlet arrangement. (ekstern lenke)
• Sæthre, Bjørn S.; Hoffmann, Alex Christian (2004). Interfacial area determination by chemically enhanced extraction with new adaptations for use in continuous flow rigs. (ekstern lenke)

Errata

• Kosinski, Pawel Jan; Hoffmann, Alex Christian (2014). Extended hard-sphere model and collisions of cohesive particles (vol 84, 031303, 2011). (ekstern lenke)

Leserinnlegg

• Balakin, Boris V; Kosinski, Pawel Jan; Hoffmann, Alex Christian (2011). Untitled Reply. (ekstern lenke)

Rapport

• Amundsen, P. A.; Hoffmann, Alex Christian; Olsson, G. (2009). Søknad om akkreditering av Doktorgrad i prosess,-energi- og automatiseringsteknikk ved Høgskolen i Telemark: Rapport fra sakkyndig komie. (ekstern lenke)
• Peng, Weiming; Hoffmann, Alex Christian; Foo, Kee-Khoon (2004). Visualization of the vortex end in the Shell swirl tube Controlling the vortex end in the Shell swirl tube Controlling the vortex end and crosstalk, and finding the optimal geometry for the Shell TSS swirl-deck. (ekstern lenke)

Vitenskapelig monografi

• Dehling, Herold G.; Gottschalk, Timo; Hoffmann, Alex Christian (2007). Stochastic modelling in process technology. (ekstern lenke)
• Hoffmann, Alex Christian; Stein, Louis E. (2007). Gas cyclones and swirl tubes: principles, design and operation. (ekstern lenke)
• Hoffmann, Alex Christian; Stein, Louis E. (2002). Cyclones and Swirl Tubes, Principles, Design and Operation. (ekstern lenke)

Kronikk

• Hoffmann, Alex Christian (2005). Fremtidens energi. (ekstern lenke)

Anmeldelse

• Hoffmann, Alex Christian (2001). Book review, Transport Phenomena by W.J. Beek et al. (ekstern lenke)

Se en full oversikt over publikasjoner i Cristin