Professor Berend van Wachem's research work focuses on developing and employing modelling methods applicable to multiphase flow simulations and predictions. He works on developing and employing closure models describing the fluid-phase, particle-phase, and their interactions for dense gas-solid flows in the Eulerian-Eulerian (e.g. van Wachem 2001,2008) and Eulerian-Lagrangian framework (e.g. van Wachem, 2001, 2003) and more recently on developing numerical methods for the direct numerical simulation (DNS) of gas-solid flows as well (e.g. Mark and van Wachem 2008).
It is Berend van Wachem's belief that, in order to fundamentally understand multiphase flows, a much better insight in the physical processes at all length and time scales is required. The research of Dr. van Wachem aims at fundamentally understanding the physical behaviour of multiphase flows by focusing on the appropriate scales, and trying to integrate models developed and employed at one scale with other scales.
The tool MultiFlow (www.multiflow.org), developed by Dr. van Wachem and his research group, has proved a powerful framework to carry out such simulations.