Alex Christian Hoffmann
Stilling
Emeritus, fluid- og partikeldynamik, thermodynamik
Tilhørighet
- E-post
- alex.hoffmann@uib.no
- Telefonnummer
- +47 55582876
- +4790832490
- Besøksadresse
-
Allégaten 55
5007 Bergen - Postadresse
-
Postboks 7803
5020 Bergen
Alex Christian Hoffmann
Stilling
Emeritus, fluid- og partikeldynamik, thermodynamik
Tilhørighet
Publikasjoner
Vitenskapelig artikkel
- Mario Cioffi; Klazien J. Ganzeveld; Alex Christian Hoffmann et al. (2004). A rheokinetic study of bulk free radical polymerization performed with a helical barrel rheometer. (ekstern lenke)
- D van der Spoel; Erik Johannes Wensink; Alex Christian Hoffmann (2006). Lifting a wet glass from a table: A microscopic picture. (ekstern lenke)
- Maryam Ghaffari; Alex Christian Hoffmann; Trygve Skjold 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)
- M. Cioffi; Alex Christian Hoffmann; L.P.B.M. Janssen (2001). Rheokinetics and the influence of shear rate on the Trommsdorff (gel) effect during free radical polymerization. (ekstern lenke)
- Ted Ørjan Seim Gundersen; Victor Moënne-Loccoz; Marine Dupoiron et al. (2023). Visualization of Unsteady Flow in a Multistage Helico-Axial Pump. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2008). Numerical modeling of solid oxide fuel cells. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann; R. Klemens (2005). Dust lifting behind shock waves: comparison of two modelling techniques. (ekstern lenke)
- Crina S. Suciu; Alex Christian Hoffmann; Arild Vik et al. (2008). Effect of calcination conditions and precursor proportions on the properties of YSZ nanoparticles obtained by modified sol-gel route. (ekstern lenke)
- Crina S. Suciu; Alex Christian Hoffmann; Eugen Dorolti et al. (2008). NiO/YSZ nanoparticles obtained by new sol-gel route. (ekstern lenke)
- Dagfinn Mæland; Crina S. Suciu; Ivar Wærnhus et al. (2009). Sintering of 4YSZ (ZrO2+4 mol% Y2O3) nanoceramics for solid oxide fuel cells (SOFCs), their structure and ionic conductivity. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2010). Quantification of the adhesive impulse for the extended hard-sphere model. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2009). Modeling of transport, chemical and electrochemical phenomena in a cathode-supported SOFC. (ekstern lenke)
- Boris Balakin; Tom Christian Holm Adamsen; Yu-Fen Chang et al. (2017). Non-invasive studies of multiphase flow in process equipment. Positron emission particle tracking technique.. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2008). Simulation of a dust lifting process with rough walls. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2008). Influence of collision algorithm parameters on statistical results of dust lifting simulations. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2010). Effects of heat sources on the performance of a planar solid oxide fuel cell. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2010). Transport, chemical and electrochemical processes in a planar SOFC: Detailed three-dimensional modeling. (ekstern lenke)
- Erik Johannes Wensink; Alex Christian Hoffmann; P.J. van Maaren et al. (2003). Dynamic properties of water/alcohol mixtures studied by computer simulation. (ekstern lenke)
- Alex Christian Hoffmann (2023). Signs of stress. (ekstern lenke)
- Yu-Fen Chang; Alex Christian Hoffmann (2015). A Lagrangian study of liquid flow in a reverse-flow hydrocyclone using positron emission particle tracking. (ekstern lenke)
- Herold G. Dehling; Chutima Dechsiri; Timo Gottschalk et al. (2007). A stochastic model for mixing and segregation in slugging fluidized beds. (ekstern lenke)
- Timo Gottschalk; Herold G. Dehling; Alex Christian Hoffmann (2008). Multiphase stochastic model for fluidized beds. (ekstern lenke)
- Pavel Struchalin; Vegar Hovdenakk Øye; Pawel Jan Kosinski et al. (2022). Flow loop study of a cold and cohesive slurry. Pressure drop and formation of plugs. (ekstern lenke)
- Stefan H. Schaafsma; Tom Marx; Alex Christian Hoffmann (2006). Investigation of the particle flowpattern and segregation in tapered fluidized bed granulators. (ekstern lenke)
- Boris V Balakin; Sergey Alyaev; Alex Christian Hoffmann et al. (2013). Micromechanics of agglomeration forced by the capillary bridge: The restitution of momentum. (ekstern lenke)
- Ellinor Arguilla Svensen; Alex Christian Hoffmann (2020). First and second-order models for the vortex length in cylinder-on-cone cyclones based on large-eddy simulations. (ekstern lenke)
- Alex Christian Hoffmann; Weiming Peng; H Dries 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)
- Siri Jacobsson; Trond Austrheim; Alex Christian Hoffmann (2006). Experimental and computational fluid dynamics investigation of the flow in and around once-through swirl tubes. (ekstern lenke)
- T Gottschalk; HG Dehling; Alex Christian Hoffmann (2006). Danckwerts' law for mean residence time revisited. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2009). The effect of polydispersity on dust lifting behind shock waves. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski et al. (2010). Combined CFD/Population Balance Model for gas hydrate particle size prediction in turbulent pipeline flow. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2009). Jet-vortex interaction: a numerical study. (ekstern lenke)
- Trond Austrheim; Lars H. Gjertsen; Alex Christian Hoffmann (2008). Experimental investigation of the performance of a large-scale scrubber operating at elevated pressure on live natural gas. (ekstern lenke)
- Crina S. Suciu; Egil Severin Erichsen; Alex Christian Hoffmann et al. (2009). Modified sol-gel method used for obtaining SOFC electrolyte materials. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2009). Detailed modeling of an anode-supported solid oxide fuel cell using a fully three-dimensional approach. (ekstern lenke)
- Crina S. Suciu; L.ucia Gagea; Alex Christian Hoffmann et al. (2006). Sol-gel production of zirconia nanoparticles with a new organic precursor. (ekstern lenke)
- Ted Ørjan Seim Gundersen; Erik Andre Torbergsen; Boris Balakin 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)
- Maryam Ghaffari; Anders Vestvik; Boris V Balakin et al. (2012). Deposition capabilities of turbulent particle-laden flow passing an obstacle using experiment and CFD. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski (2011). Experimental study and computational fluid dynamics modeling of deposition of hydrate particles in a pipeline with turbulent water flow. (ekstern lenke)
- J.C. Bosma; Alex Christian Hoffmann (2003). On the capacity of continuous powder classification in a gas fluidized bed with horizontal baffles. (ekstern lenke)
- Nelson Thambiraj; I. Warnhus; C. Suciu et al. (2020). Single-Cell Tests to Explore the Reliability of Sofc Installations Operating Offshore. (ekstern lenke)
- Bjørn Steen Sæthre; David van der Spoel; Alex Christian Hoffmann (2012). Free energy of separation of structure II clathrate hydrate in water and a light oil. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski (2014). Coupling STAR-CD with a population-balance technique based on the classes method. (ekstern lenke)
- Pawel Kosinski; Anna Dorota Kosinska; Alex Christian Hoffmann (2009). Simulation of solid particles behaviour in a driven cavity flow. (ekstern lenke)
- Pawel Jan Kosinski; Boris V Balakin; Prachi Middha et al. (2013). Heat conduction during collisions of cohesive and viscoelastic particles. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2010). An extension of the hard-sphere particle-particle collision model to study agglomeration. (ekstern lenke)
- Gleb Pisarev; Alex Christian Hoffmann (2011). Certainties and uncertainties in CFD prediction of the end of the vortex behaviour in centrifugal separators. (ekstern lenke)
- Ragnhild Brandsæter Asserson; Alex Christian Hoffmann; Sylvi Høiland et al. (2009). Interfacial tension measurement of freon hydrates by droplet deposition and contact angle measurements. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2007). Dust Lifting Simulations with Particles of Distributed Sizes. (ekstern lenke)
- Trond Austrheim; Lars H. Gjertsen; Alex Christian Hoffmann (2007). Is the Souders-Brown equation sufficient for scrubber design? An experimental investigation at elevated pressure with hydrocarbon fluids. (ekstern lenke)
- Crina S. Suciu; Alex Christian Hoffmann; Arild Vik et al. (2007). Fuel cells and nanoparticles. (ekstern lenke)
- Pawel Jan Kosinski; Anna Kosinska; Alex Christian Hoffmann (2007). Consequences of particle-particle interaction in a 2D square domain. (ekstern lenke)
- Boris V Balakin; Iryna Notøy; Alex Christian Hoffmann et al. (2012). The formation of deposit in a magnetic fluid: Numerical and experimental study. (ekstern lenke)
- Pawel Jan Kosinski; Boris V Balakin; Prachi Middha et al. (2014). Collisions between particles in multiphase flows: Focus on contact mechanics and heat conduction. (ekstern lenke)
- W. Peng; P.J.A.J. Boot; Alex Christian Hoffmann et al. (2001). Flow in the inlet region in tangential inlet cyclones. (ekstern lenke)
- Chutima Dechsiri; EA Van der Zwan; Herold G. Dehling et al. (2005). Dispersion of particle pulses in fluidized beds measured by positron emission tomography. (ekstern lenke)
- Chutima Dechsiri; A Ghione; F van de Wiel et al. (2005). Positron emission tomography applied to fluidization engineering. (ekstern lenke)
- J Ritherdon; Chutima Dechsiri; AR Jones et al. (2005). On suitability of novel fluidised bed technique for separation of metallic powders during commercial powder metallurgical processing. (ekstern lenke)
- SH Schaafsma; P Vonk; NWF Kossen et al. (2006). A model for the spray zone in early-stage fluidized bed granulation. (ekstern lenke)
- Alex Christian Hoffmann; Åshild Skorpen Heggland; Yu-Fen Chang (2019). Positron emission particle tracking and CFD investigation of hydrocyclones acting on liquids of varying viscosity. (ekstern lenke)
- Weiming Peng; Alex Christian Hoffmann; Huub W.A. Dries et al. (2005). Neutrally boyant tracer in gas cleaning equipment. A case study. (ekstern lenke)
- Gleb Pisarev; Alex Christian Hoffmann; Weiming Peng et al. (2011). Large Eddy Simulation of the vortex end in reverse-flow centrifugal separators. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2009). Extension of the hard-sphere particle-wall collision model to account for particle deposition. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski et al. (2008). Eulerian-Eulerian simulation of sedimentation of uniformly-sized, non-Brownian spheres in viscous fluids. (ekstern lenke)
- Hanna-Mari Viktoria Tikkanen; Crina S. Suciu; Ivar Wærnhus 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)
- Crina S. Suciu; Arild Vik; Firuta Goga et al. (2009). Physico-chemical characterization of 8ysz nanoparticles by modified sol-gel method. (ekstern lenke)
- Prachi Middha; Boris V Balakin; Line Kristin Leirvåg et al. (2013). PEPT - A novel tool for investigation of pneumatic conveying. (ekstern lenke)
- Gleb Pisarev; Vidar Gjerde; Boris V Balakin et al. (2012). Experimental and computational study of the "end of the vortex" phenomenon in reverse-flow centrifugal separators. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2005). Modelling of dust lifting using the Lagrangian approach. (ekstern lenke)
- Boris V Balakin; Håkon Pedersen; Ziya Kilinc et al. (2010). Turbulent flow of freon R11 hydrate slurry. (ekstern lenke)
- Stamatina Karakitsiou; Bodil Holst; Alex Christian Hoffmann (2017). Pressure-Driven Gas Flow through Nano-Channels at High Knudsen Number. (ekstern lenke)
- Huub Dries; Alex Christian Hoffmann (2019). A correlation giving improved description of the capacity and efficiency of vane-type gas-liquid separators. (ekstern lenke)
- Nelson Thambiraj; C. Suciu; I. Warnhus et al. (2017). Effect of Oxygen Depletion to the Cathode on the Working of Solid Oxide Fuel Cells. (ekstern lenke)
- Crina S. Suciu; Alex Christian Hoffmann; Pawel Jan Kosinski (2008). Obtaining YSZ nanoparticles by the sol-gel method with sucrose and pectin as organic precursors. (ekstern lenke)
- Weiming Peng; Alex Christian Hoffmann; Huub Dries (2004). Separation characteristics of swirl-tube dust separators. (ekstern lenke)
- W. Peng; Alex Christian Hoffmann; P.J.A.J. Boot et al. (2002). Flowpattern in Reverse Flow Centrifugal Separators. (ekstern lenke)
- Pawel Kosinski; Anna Dorota Kosinska; Alex Christian Hoffmann (2007). Consequences of particle-particle interaction in a 2-D square domain. (ekstern lenke)
- M. Cioffi; K.J. Ganzeveld; Alex Christian Hoffmann et al. (2002). Rheokinetics of linear polymerization. A literature review. (ekstern lenke)
- Stamatina Karakitsiou; Bodil Holst; Alex Christian Hoffmann (2016). Apparatus for measuring pressure-driven transport through channels at high Knudsen numbers. (ekstern lenke)
- Alex Christian Hoffmann; M. de Groot; W. Peng et al. (2001). Advantages and risks in increasing cyclone separator length. (ekstern lenke)
- Boris V Balakin; Iryna Notøy; Alex Christian Hoffmann et al. (2011). CFD model for the magnetically forced formation of an obstructive deposit in a magnetorheological fluid. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2006). An investigation of the consequences of primary dust explosions in interconnected vessels. (ekstern lenke)
- Weiming Peng; Alex Christian Hoffmann; Huub Dries et al. (2005). Experimental study of the vortex end in centrifugal separators: The nature of the vortex end. (ekstern lenke)
- Weiming Peng; Alex Christian Hoffmann; Huub Dries et al. (2007). Reverse-flow centrifugal separators in parallel: Performance and flow pattern. (ekstern lenke)
- Nazerke Saparbayeva; Yu-Fen Chang; Pawel Jan Kosinski et al. (2023). Cohesive collisions of particles in liquid media studied by CFD-DEM, video tracking, and Positron Emission Particle Tracking. (ekstern lenke)
- Bjørn Steen Sæthre; Alex Christian Hoffmann; David van der Spoel (2014). Order Parameters and Algorithmic Approaches for Detection and Demarcation of Interfaces in Hydrate−Fluid and Ice−Fluid Systems. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2008). Three-dimensional simulation of a dust lifting process with varying parameters. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2011). Numerical study on the dynamics of a jet-vortex interaction. (ekstern lenke)
- C.A. Biggs; C. Sanders; A.C. Scott et al. (2003). Coupling granule properties and granulation rates in high-shear granulation. (ekstern lenke)
- Gleb Pisarev; Alex Christian Hoffmann (2012). Effect of the 'end of the vortex' phenomenon on the particle motion and separation in a swirl tube separator. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski et al. (2010). Eulerian-Eulerian CFD model for the sedimentation of spherical particles in suspensions with high particle concentrations. (ekstern lenke)
- Maryam Ghaffari; Yu-Fen Chang; Boris V Balakin et al. (2012). CFD Modeling of PEPT Results of Particle Motion Trajectories in a Pipe over an Obstacle. (ekstern lenke)
- Diego Rubio; C. Suciu; I. Warnhus et al. (2017). Tape Casting of Lanthanum Chromite for Solid Oxide Fuel Cell Interconnects. (ekstern lenke)
- Hanna-Mari Viktoria Tikkanen; Crina S. Suciu; Ivar Wærnhus et al. (2011). Dip-coating of 8YSZ nanopowder for SOFC applications. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski (2010). Population Balance Model for Nucleation, Growth, Aggregation, and Breakage of Hydrate Particles in Turbulent Flow. (ekstern lenke)
- Aslak Solvang Hellestø; Maryam Ghaffari; Boris Balakin et al. (2016). A parametric study of cohesive particle agglomeration in a shear flow : numerical simulations by the discrete element method. (ekstern lenke)
- Boris Balakin; Simon Lo; Pawel Jan Kosinski et al. (2016). Modelling agglomeration and deposition of gas hydrates in industrial pipelines with combined CFD-PBM technique. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2007). Numerical Simulation of Electrochemical and Transport Processes in Solid Oxide Fuel Cells. (ekstern lenke)
- Trond Austrheim; Lars H. Gjertsen; Alex Christian Hoffmann (2007). Re-entrainment correlations for demisting cyclones acting at elevated pressures on a range of fluids. (ekstern lenke)
- Gleb Pisarev; Alex Christian Hoffmann; Weiming Peng et al. (2009). Large eddy simulation of the vortex end in reverse-flow centrifugal separators. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski et al. (2010). Turbulent flow of hydrates in a pipeline of complex configuration. (ekstern lenke)
- Yu-Fen Chang; Gleb Pisarev; Alex Christian Hoffmann (2011). Numerical Study of the "End of the Vortex" Phenomenon in a Hydrocyclone Separator. (ekstern lenke)
- Yu-Fen Chang; Tom Christian Adamsen; Alex Christian Hoffmann (2012). Using a PET Camera to Track Individual Phases in Process Equipment with High Temporal and Spatial Resolutions: Algorithm Development. (ekstern lenke)
- Yu-Fen Chang; Catalin Grigore Ilea; Øystein Lee Aasen et al. (2011). Particle flow in a hydrocyclone investigated by positron emission particle tracking. (ekstern lenke)
- R.J. Reuvekamp; M.B. Ray; Alex Christian Hoffmann (2002). Deposition of Fine Powder in Horizontal Pipelines and Bends. (ekstern lenke)
- C. Suciu; E. Dorolti; Alex Christian Hoffmann (2018). Physico-chemical properties of nanocrystalline YSZ powders as a function of doping level and electrical properties after sintering. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2009). Numerical analysis of a planar anode-supported SOFC with composite electrodes. (ekstern lenke)
- Weiming Peng; Dorthe Christensen; Siri Jacobsson et al. (2010). Studies of the flow in and around gas dedusters and demisters using neutrally buoyant tracer. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2007). An Eulerian-Lagrangian model for dense particle clouds. (ekstern lenke)
- M. Cioffi; L.P.B.M. Janssen; Alex Christian Hoffmann (2001). Instabilities in free radical polymerization. (ekstern lenke)
- M. Cioffi; L.P.B.M. Janssen; Alex Christian Hoffmann (2001). Reducing the gel effect in free radical polymerization. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2005). Dust explosions in connected vessels: Mathematical modelling. (ekstern lenke)
- Alex Christian Hoffmann; Chutima Dechsiri; F van de Wiel et al. (2005). PET investigation of a fluidized particle: spatial and temporal resolution and short term motion. (ekstern lenke)
- Alex Christian Hoffmann (2020). A note on the multiphase balance equations. (ekstern lenke)
- Yu-Fen Chang; Tom Christian Adamsen; Gleb Pisarev et al. (2013). PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies. (ekstern lenke)
- Svein-Arne Marthinussen; Yu-Fen Chang; Boris V Balakin et al. (2014). Removal of particles from highly viscous liquids with hydrocyclones. (ekstern lenke)
- Alex Christian Hoffmann; Daniel Gilje Fonnes; Yu-Fen Chang (2023). Flowpattern in hydrocyclones, numerical simulations with experimental verification. (ekstern lenke)
- Trond Austrheim; Lars H. Gjertsen; Alex Christian Hoffmann (2008). An experimental investigation of scrubber internals at conditions of low pressure. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2008). Numerical modelling of a solid oxide fuel cells: a charge diffusion-based model. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2005). Mathematical modelling of dust explosions in interconnected vessels. (ekstern lenke)
- Pawel Jan Kosinski; Anna Kosinska; Alex Christian Hoffmann (2009). Simulation of solid particles behaviour in a driven cavity flow. (ekstern lenke)
- Nelson Thambiraj; C. Suciu; I. Warnhus et al. (2017). SOFC Cathode Degradation due to Salt Contamination. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski (2012). The collision efficiency in a shear flow. (ekstern lenke)
- Alex Christian Hoffmann; Sandra Stang Pletten; Mirko Mania (2019). A study of transfer rates of phenols from caustic to crude oil. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2011). Extended hard-sphere model and collisions of cohesive particles. (ekstern lenke)
Masteroppgave
- Håkon Pedersen; Alex Christian Hoffmann (2008). Formation, Particle Size Distribution and Flow Dependence of Freon (R11) Hydrates in Multiphase Flow Systems. (ekstern lenke)
- Eli Kvinnesland; Alex Christian Hoffmann (2004). Single-phase characterization of the inlet arrangement schoepentoeter. (ekstern lenke)
- Alise Romsloe; Alex Christian Hoffmann (2014). Cyclonic oil-water separator with an overflow system. (ekstern lenke)
- Vegard Eikill; Alex Christian Hoffmann (2010). Characterization of the anode and cathode materials for solid oxide fuel cells (SOFCs). (ekstern lenke)
- Dorthe Christensen; Alex Christian Hoffmann (2004). Single-phase characterization of the new open spinlet arrangement. (ekstern lenke)
- Øystein Lee Aasen; Alex Christian Hoffmann (2010). Experimental investigation of particle trajectory through an hydrocyclone using a Positron Emission Tomography (PET) scanner. (ekstern lenke)
- Ole André Thormodsæter; Alex Christian Hoffmann (2008). Production and Characterization of YSZ Nanoparticles and Thin Films forPlanar Ceramic SOFC Electrolytes. (ekstern lenke)
- Sandra Pletten; Alex Christian Hoffmann (2014). An Experimental and Theoretical Study of Transfer Rates of Phenols from Caustic to Crude Oil. (ekstern lenke)
- Vidar I. Gjerde; Alex Christian Hoffmann (2010). The Natural Vortex Length in Centrifugal Separators. (ekstern lenke)
- Boris V Balakin; A.R. Hellestø; Alex Christian Hoffmann (2014). A study of solid particle agglomeration - particle by particle. (ekstern lenke)
- Dagfinn Mæland; Alex Christian Hoffmann (2008). Sintering and Impedance Spectroscopy Characterisation of Nanoparticle-based Functional Materials for Solid Oxide Fuel Cells. (ekstern lenke)
- Ziya Kilinc; Alex Christian Hoffmann (2008). Formation and Particle Size Distribution of Cyclopentane Hydrates in a Multiphase Flow System. (ekstern lenke)
- Maren A. Dahl; Alex Christian Hoffmann (2010). New experimental techniques to study the adhesion to various solid surfaces of hydrate-relevant droplets and particles. (ekstern lenke)
- Ragnhild Asserson; Alex Christian Hoffmann (2007). Interfacial tension measurements of freon hydrates by means of droplet deposition and contact angle measurements. (ekstern lenke)
- Roger Lie; Alex Christian Hoffmann (2007). Horizontal particle transport in a flowing liquid. (ekstern lenke)
- Siri Jacobsson; Alex Christian Hoffmann (2004). Single Phase Characterization of the Verlaan Cyclone. (ekstern lenke)
- Bjørn S. Sæthre; Alex Christian Hoffmann (2004). Interfacial area determination by chemically enhanced extraction with new adaptations for use in continuous flow rigs. (ekstern lenke)
Forelesning
- Maryam Ghaffari; Trygve Skjold; Kees van Wingerden et al. (2016). A model validation framework for the dust explosion simulator FLACS-DustEx: Challenges, limitations and possibilities. (ekstern lenke)
- Alex Christian Hoffmann (2009). Fysikkens rolle for energispørgsmål. (ekstern lenke)
- C. S. Suciu; Dagfinn Mæland; Alex Christian Hoffmann et al. (2008). Research in materials for solid oxide fuel cells. (ekstern lenke)
- C. S. Suciu; Hanna-Mari Viktoria Tikkanen; Thinh Xuan Ho et al. (2010). Hydrogenaktiviteter på Universitetet i Bergen. (ekstern lenke)
- Alex Christian Hoffmann (2005). Innen den overskuelige framtid vil verdens energiforbuk mangedoplet, hvilke utfordringer byr det på? Finnes det plausible løsninger?. (ekstern lenke)
- Alex Christian Hoffmann (2005). Energy for the future, wherefrom?. (ekstern lenke)
- Alex Christian Hoffmann (2001). Brændselsceller, en anden slags elektrokemi. (ekstern lenke)
- Alex Christian Hoffmann (2005). Energikilder for det næste århundrede. (ekstern lenke)
Konferanseforedrag
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2008). Numerical study of an SOFC with direct internal reforming using charge diffusion-based model. (ekstern lenke)
- C. Dechsiri; F. van de Wiel; H.G. Dehling et al. (2003). Positron emission tomography applied to fluidization engineering. (ekstern lenke)
- C. S. Suciu; Alex Christian Hoffmann; I Wærnhus (2010). A flexible, cost-effective production method for high-quality nanoparticles. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski (2009). Computational fluid dynamic model of gas hydrate deposition in a turbulent flow. (ekstern lenke)
- J.C. Bosma; Alex Christian Hoffmann (2002). Feasibility Study of Particle Classification in Fluidized Beds with Internal Baffles. (ekstern lenke)
- Tanja Barth; Shiva Talatori; Kristin Erstad et al. (2008). Hydrates in petroleum production-assessment of plug risk. Project HYPERION enters it s third and final year. (ekstern lenke)
- Yu-Fen Chang; Åshild Skorpen; Alex Christian Hoffmann (2012). Detecting anomalies in the separation process in a hydrocyclone using a medical PET scanner. (ekstern lenke)
- Crina S. Suciu; Dagfinn Mæland; Alex Christian Hoffmann et al. (2008). Priorities in Material Design for Solid Oxide Fuel Cells -With Emphasis on the Anode and the Electrolyte. (ekstern lenke)
- CA Torres; Alex Christian Hoffmann; B Kloss-Quiroga et al. (1999). Towards an European Masters in International: the experience of TropEdEurope since 1996. (ekstern lenke)
- Boris V Balakin; Alex Christian Hoffmann; Pawel Jan Kosinski (2013). Restitution of momentum during interparticle collision affected by liquid bridge. (ekstern lenke)
- Huub W.A. Dries; Alex Christian Hoffmann (2019). Synergy from a University / Industry Partnership Leading to Improved Gas/Particulate-Separators. (ekstern lenke)
- Maryam Ghaffari; Lorenzo Mauri; Trygve Skjold et al. (2017). Improved modelling of particle-laden flow in the CFD simulator FLACS-DustEx. (ekstern lenke)
- Pawel Jan Kosinski; Anna Kosinska; Alex Christian Hoffmann (2006). Fluid-particle flows in a driven cavity. (ekstern lenke)
- Yu-Fen Chang; Boris Balakin; Alex Christian Hoffmann (2023). Advancements in Positron Emission Particle Tracking: Unveiling Complex Flow Patterns in Miniature Multiphase Flow Devices. (ekstern lenke)
- Yu-Fen Chang; Alex Christian Hoffmann; Catalin Grigore Ilea et al. (2010). Particle flow in a hydrocyclone investigated by radioactive particle tracking. (ekstern lenke)
- Crina S. Suciu; Alex Christian Hoffmann; A. Goga et al. (2008). NiO nanoparticles for SOFC anodes. Comparison of two synthesis methods. (ekstern lenke)
- Yu-Fen Chang; Catalin Grigore Ilea; Øystein Lee Aasen et al. (2011). Particle trajectories in a hydrocyclone measured by PEPT. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2004). Mathematical modelling of dust explosions in interconnected vessels. (ekstern lenke)
- Yu-Fen Chang; Boris Balakin; Alex Christian Hoffmann (2023). Measuring multiphase flow in miniature devices using PEPT. (ekstern lenke)
- Alex Christian Hoffmann (2002). Gas Cyclone Separators -- Potential and Limitations. (ekstern lenke)
- Boris Balakin; Tom Christian Holm Adamsen; Yu-Fen Chang et al. (2016). Non-invasive studies of multiphase flow in process equipment. Positron emission particle tracking technique. (ekstern lenke)
- W. Peng; Alex Christian Hoffmann; P.J.A.J. Boot et al. (2001). Determining the best modelling assumptions for cyclones and swirl tubes by CFD and LDA. (ekstern lenke)
- P.C. Wright; Y.T. Makkawi; V. Meeyoo et al. (2002). Observation of Cross-Sectional Non-Uniformity in Fluidized Beds Using Two Different Imaging Techniques. (ekstern lenke)
- Boris Balakin; Aslak Solvang Hellestø; Pawel Jan Kosinski et al. (2021). Multiphase CFD Models of Agglomeration and Deposition in Hydrate Slurries. (ekstern lenke)
- Maryam Ghaffari; Trygve Skjold; Lorenzo Mauri et al. (2018). Turbulence modulation modelling in the CFD simulator FLACS-DustEx. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann (2011). Particle-particle agglomeration and use of the hard-sphere model. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2006). 3-D Eulerian-Lagrangian Simulation of Dust Lifting. (ekstern lenke)
- Alex Christian Hoffmann; Stamatina Karakitsiou; Bodil Holst (2016). Exact solution for the axial pressure drop in cylindrical isothermal channels with Maxwell slip flow. (ekstern lenke)
- Bjørn Steen Sæthre; Alex Christian Hoffmann; David van der Spoel (2011). Order parameters for detection and demarkation of interfaces in hydrate-fluid and ice-fluid systems. (ekstern lenke)
- Weiming Peng; Siri Jacobsson; Alex Christian Hoffmann (2007). Neutrally buoyant tracer in gas cleaning equipment. A case study. (ekstern lenke)
- Yu-Fen Chang; Tom Christian Adamsen; Alex Christian Hoffmann (2012). Using a PET camera to track individual phases in process equipment with high temporal and spatial resolutions: Algorithm development. (ekstern lenke)
- Yu-Fen Chang; Boris Balakin; Alex Christian Hoffmann (2024). Investigating miniature hydrocyclones for enhanced bioprocessing efficiency. (ekstern lenke)
- Yu-Fen Chang; Gleb Pisarev; Alex Christian Hoffmann (2011). PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies. (ekstern lenke)
- C.A. Biggs; C.F.W. Sanders; A.C. Scott et al. (2001). Coupling granule properties and granulation rates in high-shear granulation. (ekstern lenke)
- Alex Christian Hoffmann (2002). Gas Cyclone Separators -- Potential and Limitations. (ekstern lenke)
- Alex Christian Hoffmann (2019). PEPT at the University of Bergen. (ekstern lenke)
- Alex Christian Hoffmann (2005). The physics of cyclones. (ekstern lenke)
- Bjørn Steen Sæthre; Alex Christian Hoffmann (2008). Surface-fluctuations on clathrate hydrate structure I and II slabs in selected environments. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2010). Ordering of monosized particles during simulations of a fluid-solid flow under shear. (ekstern lenke)
- Alex Christian Hoffmann (2003). Brændselcellekursus. (ekstern lenke)
- Alex Christian Hoffmann; Daniel Fonnes; Yu-Fen Chang (2023). Flowpattern in hydrocyclones: numerical simulations with experimental verification. (ekstern lenke)
- Alex Christian Hoffmann (2001). Hvordan levere kompetence til gasindustrien?. (ekstern lenke)
- Pawel Jan Kosinski; Anna Kosinska; Alex Christian Hoffmann (2007). Numerical simulation of particle-flow interactions: formation of agglomerates. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2007). Simulation of a dust lifting process in a two-dimensional domain with rough walls. (ekstern lenke)
- Alex Christian Hoffmann; Yu-Fen Chang (2023). Lagrangian particle tracking in confined, strongly swirling flow in hydrocyclones: comparison of large-eddy simulations with experiment. (ekstern lenke)
- C. Suciu; Alex Christian Hoffmann; E. Dorolti et al. (2010). Properties of 3-15 mol% YSZ materials. (ekstern lenke)
- C. Dechsiri; E. van der Zwan; J.C. Bosma et al. (2002). Positron Emission Tomography (PET) for Fluidization. (ekstern lenke)
- Prachi Middha; Boris V Balakin; Alex Christian Hoffmann et al. (2013). PEPT and CFD investigation of lean-phase pneumatic conveying through a bend. (ekstern lenke)
- Pawel Kosinski; Anna Dorota Kosinska; Alex Christian Hoffmann (2007). Numerical simulation of particle-flow interactions: formation of agglomerates. (ekstern lenke)
- M.E.F. Apol; H.J.C. Berendsen; A.E. Mark et al. (2002). Interparticle Forces for DEM by MD Simulations. (ekstern lenke)
- C. Dechsiri; H.G. Dehling; Alex Christian Hoffmann (2002). Stochastic Model for Fluidization. (ekstern lenke)
- C. Dechsiri; J.C. Bosma; Alex Christian Hoffmann et al. (2001). A Stochastic Model for Particle Mixing and Segregation in Fluidized Beds with Baffles. (ekstern lenke)
- Alex Christian Hoffmann (2002). Brenselscelleteknologi. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2009). Fully three-dimensional modeling of Solid Oxide Fuel Cells. (ekstern lenke)
- Alex Christian Hoffmann; C. Dechsiri; F. van de Wiel et al. (2003). Tracking individual particles in a fluidized bed using a medical PET-Camera. (ekstern lenke)
- Maryam Ghaffari; Trygve Skjold; Rolf Kristian Eckhoff et al. (2018). Effect of particle size on burning velocity calculation in FLACS-DustEx. (ekstern lenke)
- Boris V Balakin; Pawel Jan Kosinski; Alexander Kartushinsky et al. (2016). CFD-PBM modelling of agglomeration and deposition in petroleum industry. (ekstern lenke)
- Crina Silvia Suciu; Alex Christian Hoffmann (2006). Sol-Gel Production of ZrO2 and YSZ with a New Organic Precursor. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann (2006). Direct numerical simulation of particle-fluid flow: The state-of-the-art. (ekstern lenke)
- Hanna-Mari Viktoria Tikkanen; C. Suciu; I Wærnhus et al. (2011). Fabrication and cell performance of anode-supported SOFC made of in-house produced NiO-YSZ nano-composite powder. (ekstern lenke)
- Crina S. Suciu; Dagfinn Mæland; Alex Christian Hoffmann et al. (2008). The Use of Nanoparticles for Solid Oxide Fuel Cell Components. (ekstern lenke)
Vitenskapelig bokkapittel
- Crina S. Suciu; E. Dorolti; Alex Christian Hoffmann (2015). Properties of xYSZ nanoparticles and pellets with x varying from 1 to 15%. (ekstern lenke)
- Stamatina Karakitsiou; Sabrina Daniela Eder; Bodil Holst et al. (2015). Design, development and testing of apparatus to study gas diffusion in nanochannels. (ekstern lenke)
- Alex Christian Hoffmann (2011). Stochastic Modeling Techniques in Powder Technology. (ekstern lenke)
Konferanseposter
- Dagfinn Mæland; Crina S. Suciu; Ivar Wærnhus et al. (2008). Sintering properties of 4YSZ nanoparticles and ionic impedance of the resulting materials. (ekstern lenke)
- Pawel Jan Kosinski; Alex Christian Hoffmann; R. Klemens (2004). Dust lifting modelling using the Eulerian and Lagrangian approaches. (ekstern lenke)
- Pawel Jan Kosinski; Boris V Balakin; Prachi Middha et al. (2013). Heat conduction between colliding particles. (ekstern lenke)
- Maryam Ghaffari; Alex Christian Hoffmann; Trygve Skjold 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)
- Erik Johannes Wensink; Alex Christian Hoffmann; P.J. Maaren et al. (2004). Extensive simulation studies of alcohol in water. (ekstern lenke)
- Pawel Jan Kosinski; Anna Kosinska; Alex Christian Hoffmann (2006). Simulation of solid particles, behaviour in a driven cavity flow. (ekstern lenke)
- C. Suciu; A. Vik; Alex Christian Hoffmann (2007). Nanoparticles for solid oxide fuel cell anodes. (ekstern lenke)
- Svein-Arne Marthinussen; Yu-Fen Chang; Boris V Balakin et al. (2013). Hydrocyclones working on highly viscous liquids. (ekstern lenke)
- C. Suciu; Alex Christian Hoffmann; A. Vik et al. (2008). Optimizing sol-gel produced NiO nanopowder as precursor for SOFC anodes. (ekstern lenke)
- Thinh Xuan Ho; Pawel Jan Kosinski; Alex Christian Hoffmann et al. (2008). Numerical study of a solid oxide fuel cell with direct internal methane reforming. (ekstern lenke)
- diego rubio; Crina S. Suciu; Ivar waernhus et al. (2016). Tape Casting of Lanthanum Chromite. (ekstern lenke)
- Prachi Middha; Boris V Balakin; Alex Christian Hoffmann et al. (2013). PEPT investigation of pneumatic conveying through a bend. (ekstern lenke)
- Catalin Grigore Ilea; Pawel Jan Kosinski; Alex Christian Hoffmann (2006). Numerical simulation of dust lifting behind shock waves in a three-dimensional computational domain. (ekstern lenke)
- Maxim Lunev; Alex Christian Hoffmann; Sumihar Silalahi (2007). Solid Oxide Fuel Cell Com- ponents Studied by Molecular Dynamics. (ekstern lenke)
- Crina S. Suciu; I Wærnhus; Hanna Tikkanen et al. (2009). Nanoparticlebased, scandium-doped materials for SOFC electrolytes; production and performance. (ekstern lenke)
- Maryam Ghaffari; Trygve Skjold; Alex Christian Hoffmann et al. (2019). Effect of particle size on burning velocity calculation in FLACS-DustEx. (ekstern lenke)
- C. Suciu; D. Mæland; Alex Christian Hoffmann et al. (2007). SOFC components from nano-particles: particle manufacture, sintering and characterization. (ekstern lenke)
- Maryam Ghaffari; Yu-Fen Chang; Boris V Balakin et al. (2012). Studying Particle Motion Trajectories in a Pipe over an Obstacle Using PEPT and CFD. (ekstern lenke)
- Hanna-Mari Viktoria Tikkanen; C. Suciu; I Wærnhus et al. (2010). Electrophoretic deposition of 8YSZ on cathode substrate. (ekstern lenke)
Vitenskapelig monografi
- Alex Christian Hoffmann; Louis E. Stein (2002). Cyclones and Swirl Tubes, Principles, Design and Operation. (ekstern lenke)
- Alex Christian Hoffmann; Louis E. Stein (2007). Gas cyclones and swirl tubes: principles, design and operation. (ekstern lenke)
- Herold G. Dehling; Timo Gottschalk; Alex Christian Hoffmann (2007). Stochastic modelling in process technology. (ekstern lenke)
Fremhevet artikkel i media
Doktorgradsavhandling
- Yu-Fen Chang; Alex Christian Hoffmann (2016). Study of the flow in a hydrocyclone using positron emission particle tracking and computational fluid dynamics simulation. (ekstern lenke)
- Catalin Grigore Ilea; Alex Christian Hoffmann (2008). Numerical Simulations of Dust Lifting. (ekstern lenke)
- Gleb Pisarev; Alex Christian Hoffmann; Henk Anton Dijkstra et al. (2011). Experimental and numerical study of the End of the Vortex phenomenon. (ekstern lenke)
- Erik Johannes Wensink; Alex Christian Hoffmann (2005). Molecular Simulations of Complex Liquids and Confined Systems. (ekstern lenke)
- Boris V Balakin; Pawel Jan Kosinski; Alex Christian Hoffmann (2010). Experimental and theoretical study of the flow, aggregation and. (ekstern lenke)
- Bjørn Steen Sæthre; Alex Christian Hoffmann; David van der Spoel (2015). Interfacial free energies in gas-hydrate/fluid interfaces. (ekstern lenke)
- Crina Silvia Ilea; Alex Christian Hoffmann (2007). New Materials for Solid Oxide Fuel Cells Based on Nanoparticles. (ekstern lenke)
- Trond Austrheim; Alex Christian Hoffmann (2006). Experimental Characterization of High-Pressure Natural Gas Scrubbers. (ekstern lenke)
- Chutima Dechsiri; Alex Christian Hoffmann; Herold G. Dehling (2004). Particle Transport in Fluidized Beds; Experiments and Stochastic Models. (ekstern lenke)
- Stamatina Karakitsiou; Alex Christian Hoffmann; Bodil Holst (2018). Experimental and theoretical study of pressure-driven transport of gases in micro and nanopores. (ekstern lenke)
- Thinh Xuan Ho; Alex Christian Hoffmann (2009). Modeling of Transport, Chemical and Electrochemical Processes in Solid Oxide Fuel Cells. (ekstern lenke)
- Jesper Tveit; Alex Christian Hoffmann; Arne Småbrekke et al. (2016). A Nonlinear Differential Equation Solver With Potential Application to Pelton Turbines. (ekstern lenke)
Rettelse i tidsskrift
Leserbrev
Forskningsrapport
- P. A. Amundsen; Alex Christian Hoffmann; G. Olsson (2009). Søknad om akkreditering av Doktorgrad i prosess,-energi- og automatiseringsteknikk ved Høgskolen i Telemark: Rapport fra sakkyndig komie. (ekstern lenke)
- Weiming Peng; Alex Christian Hoffmann; Kee-Khoon Foo (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)