Imperial College London

Professor Berend Van Wachem

Faculty of EngineeringDepartment of Mechanical Engineering

Visiting Professor



+44 (0)20 7594 7030b.van-wachem




622City and Guilds BuildingSouth Kensington Campus






Berend van Wachem obtained his MSc and PhD degree at Delft University of Technology on the modeling of dense gas-solid flows. After spending a number of years as a lecturer in Sweden, he joined the Department of Mechanical Engineering of Imperial College London in 2008.


Berend van Wachem  works on research projects involving multiphase flow modeling, ranging from understanding the behaviour of turbulence on individual particles and droplets, to the large-scale modelling of gas-solid and gas-liquid flows. He is one of the editors of the "Best Practice Guidelines for Computational Fluid Dynamics of Dispersed Multiphase Flows", has contributed to the "Multiphase Flow Handbook", and has published a number of review papers on multiphase flow modeling and understanding.

Berend van Wachem on Google Scholar

Berend van Wachem on Research Gate

Selected Publications

Journal Articles

Cerqueira RFL, Paladino EE, Evrard F, et al., 2021, Multiscale modeling and validation of the flow around Taylor bubbles surrounded with small dispersed bubbles using a coupled VOF-DBM approach, International Journal of Multiphase Flow, Vol:141, ISSN:0301-9322

Evrard F, Denner F, van Wachem B, 2021, Quantifying the errors of the particle-source-in-cell Euler-Lagrange method, International Journal of Multiphase Flow, Vol:135, ISSN:0301-9322, Pages:1-6

van Wachem B, Thalberg K, Duy N, et al., 2020, Analysis, modelling and simulation of the fragmentation of agglomerates, Chemical Engineering Science, Vol:227, ISSN:0009-2509

Evrard F, Denner F, van Wachem B, 2020, Euler-Lagrange modelling of dilute particle-laden flows with arbitrary particle-size to mesh-spacing ratio, Journal of Computational Physics: X, Vol:8

Evrard F, Denner F, van Wachem B, 2020, Height-function curvature estimation with arbitrary order on non-uniform Cartesian grids, Journal of Computational Physics: X, Vol:7

Denner F, Evrard F, van Wachem B, 2020, Modeling Acoustic Cavitation Using a Pressure-Based Algorithm for Polytropic Fluids, Fluids, Vol:5

Lukas E, Roloff C, van Wachem B, et al., 2020, Experimental investigation of the grade efficiency of a zigzag separator, Powder Technology, Vol:369, ISSN:0032-5910, Pages:38-52

Denner F, Evrard F, van Wachem BGM, 2020, Conservative finite-volume framework and pressure-based algorithm for flows of incompressible, ideal-gas and real-gas fluids at all speeds, Journal of Computational Physics, Vol:409, ISSN:0021-9991

van Wachem B, Curran T, Evrard F, 2020, Fully Correlated Stochastic Inter-Particle Collision Model for Euler-Lagrange Gas-Solid Flows, Flow Turbulence and Combustion, Vol:105, ISSN:1386-6184, Pages:935-963

Knight C, O'Sullivan C, Dini D, et al., 2020, Computing drag and interactions between fluid and polydisperse particles in saturated granular materials, Computers and Geotechnics, Vol:117, ISSN:0266-352X, Pages:1-16

Denner F, van Wachem BGM, 2019, Numerical modelling of shock-bubble interactions using a pressure-based algorithm without Riemann solvers, Experimental and Computational Multiphase Flow, Vol:1, ISSN:2661-8869, Pages:271-285

Jebelisinaki F, Boettcher R, van Wachem B, et al., 2019, Impact of dominant elastic to elastic-plastic millimeter-sized metal spheres with glass plates, Powder Technology, Vol:356, ISSN:0032-5910, Pages:208-221

Pinheiro AP, Vedovoto JM, Neto ADS, et al., 2019, Ethanol droplet evaporation: Effects of ambient temperature, pressure and fuel vapor concentration, International Journal of Heat and Mass Transfer, Vol:143, ISSN:0017-9310

Evrard F, Denner F, van Wachem B, 2019, A multi-scale approach to simulate atomisation processes, International Journal of Multiphase Flow, Vol:119, ISSN:0301-9322, Pages:194-216

Marnani AK, Bueck A, Antonyuk S, et al., 2019, The Effect of Very Cohesive Ultra-Fine Particles in Mixtures on Compression, Consolidation, and Fluidization, Processes, Vol:7

Xiao C-N, Fond B, Beyrau F, et al., 2019, Numerical Investigation and Experimental Comparison of the Gas Dynamics in a Highly Underexpanded Confined Real Gas Jet, Flow Turbulence and Combustion, Vol:103, ISSN:1386-6184, Pages:141-173

Sufian A, Knight C, O'Sullivan C, et al., 2019, Ability of a pore network model to predict fluid flow and drag in saturated granular materials, Computers and Geotechnics, Vol:110, ISSN:0266-352X, Pages:344-366

Perrier H, Denner F, Eaton MD, et al., 2019, On the numerical modelling of Corium spreading using Volume-of-Fluid methods, Nuclear Engineering and Design, Vol:345, ISSN:0029-5493, Pages:216-232

You Q, Hopf T, Hintz W, et al., 2019, Major effects on blood-retina barrier passage by minor alterations in design of polybutylcyanoacrylate nanoparticles, Journal of Drug Targeting, Vol:27, ISSN:1061-186X, Pages:338-346

Denner F, van Wachem BGM, 2019, Corrigendum to “Pressure-based algorithm for compressible interfacial flows with acoustically-conservative interface discretisation” (Journal of Computational Physics (2018) 367 (192–234), (S0021999118302535) (10.1016/, Journal of Computational Physics, Vol:381, ISSN:0021-9991, Pages:290-291

Azis MHA, Evrard F, van Wachem B, 2019, An immersed boundary method for incompressible flows in complex domains, Journal of Computational Physics, Vol:378, ISSN:0021-9991, Pages:770-795

Liu D, van Wachem B, 2019, Comprehensive assessment of the accuracy of CFD-DEM simulations of bubbling fluidized beds, Powder Technology, Vol:343, ISSN:0032-5910, Pages:145-158

Bartholomew PT, Denner F, Azis H, et al., 2018, Unified formulation of the momentum-weighted interpolation for collocated variable arrangements, Journal of Computational Physics, Vol:375, ISSN:0021-9991, Pages:177-208

Charogiannis A, Denner F, Van Wachem B, et al., 2018, Experimental investigations of liquid falling films flowing under an inclined planar substrate, Physical Review Fluids, Vol:3, ISSN:2469-990X

Fond B, Xiao C-N, T'Joen C, et al., 2018, Investigation of a highly underexpanded jet with real gas effects confined in a channel: flow field measurements, Experiments in Fluids, Vol:59, ISSN:0723-4864

Khalid MK, Asad M, Henrich-Noack P, et al., 2018, Evaluation of toxicity and neural uptake in vitro and in vivo of superparamagnetic iron oxide nanoparticles, International Journal of Molecular Sciences, Vol:19, ISSN:1422-0067

Duy N, Remmelgas J, Bjorn IN, et al., 2018, Towards quantitative prediction of the performance of dry powder inhalers by multi-scale simulations and experiments, International Journal of Pharmaceutics, Vol:547, ISSN:0378-5173, Pages:31-43

Denner F, Xiao C, Van Wachem B, 2018, Pressure-based algorithm for compressible interfacial flows with acoustically-conservative interface discretisation, Journal of Computational Physics, Vol:367, ISSN:0021-9991, Pages:192-234

Shen L, Denner F, Morgan N, et al., 2017, Marangoni effect on small-amplitude capillary waves in viscous fluids, Physical Review E, Vol:96, ISSN:1539-3755, Pages:053110-053110

Xiao C-N, Denner F, Van Wachem B, 2017, Fully-coupled pressure-based finite-volume framework for the simulation of fluid flows at all speeds in complex geometries, Journal of Computational Physics, Vol:346, ISSN:1090-2716, Pages:91-130

LaMarche CQ, Benavides Moran A, van Wachem B, et al., 2017, Two-fluid modeling of cratering in a particle bed by a subsonic turbulent jet, Powder Technology, Vol:318, ISSN:0032-5910, Pages:68-82

Wilson R, Dini D, van Wachem B, 2017, The influence of surface roughness and adhesion on particle rolling, Powder Technology, Vol:312, ISSN:0032-5910, Pages:321-333

Charogiannis, Denner, van Wachem, et al., 2017, Detailed Hydrodynamic Characterization of Harmonically Excited Falling-Film Flows: A Combined Experimental and Computational Study, Physical Review Fluids, Vol:2, ISSN:2469-990X, Pages:014002-014002

Denner F, Evrard F, Serfaty R, et al., 2016, Artificial viscosity model to mitigate numerical artefacts at fluid interfaces with surface tension, Computers & Fluids, Vol:143, ISSN:0045-7930, Pages:59-72

Van Wachem B, Zhao F, George WK, 2015, Four-way coupled simulations of small particles in turbulent channel flow, Physics of Fluids, Vol:27, ISSN:1089-7666

Denner F, van Wachem BGM, 2015, Numerical time-step restrictions as a result of capillary waves, Journal of Computational Physics, Vol:285, ISSN:0021-9991, Pages:24-40

van Wachem B, Zastawny M, Zhao F, et al., 2015, Modelling of gas-solid turbulent channel flow with non-spherical particles with large Stokes numbers, International Journal of Multiphase Flow, Vol:68, ISSN:0301-9322, Pages:80-92

Denner F, van Wachem BGM, 2014, Compressive VOF method with skewness correction to capture sharp interfaces on arbitrary meshes, Journal of Computational Physics, Vol:279, ISSN:1090-2716, Pages:127-144

Denner F, van Wachem BGM, 2014, Fully-coupled balanced-force VOF framework for arbitrary meshes with least-squares curvature evaluation from volume fractions, Numerical Heat Transfer, Part B: Fundamentals, Vol:65, Pages:218-255

Mallouppas G, George WK, van Wachem BGM, 2013, New forcing scheme to sustain particle-laden homogeneous and isotropic turbulence, Physics of Fluids, Vol:25, ISSN:1070-6631

Zhao F, van Wachem BGM, 2013, A novel Quaternion integration approach for describing the behaviour of non-spherical particles, Acta Mechanica, Vol:10.1007/s0, ISSN:0001-5970

Zastawny M, Mallouppas G, Zhao F, et al., 2012, Derivation of drag and lift force and torque coefficients for non-spherical particles in flows, International Journal of Multiphase Flow, Vol:39, ISSN:0301-9322, Pages:227-239

Darelius A, Rasmuson A, van Wachem B, et al., 2008, CFD simulation of the high shear mixing process using kinetic theory of granular flow and frictional stress models, Chemical Engineering Science, Vol:63, ISSN:0009-2509, Pages:2188-2197

Benavides A, van Wachem BGM, 2008, Numerical simulation and validation of dilute turbulent gas�particle flow with inelastic collisions and turbulence modulation, Powder Technology, Vol:182, ISSN:0032-5910, Pages:294-306

More Publications