We currently develop a particle (cluster induced) turbulence model, which is based on the concept of solid phase turbulence. This method yields considerably more general coarse-grained constitutive relations (such as for gas-solid drag and Reynolds stresses), applicable to different particle types and flow regimes such as bubbling beds, turbulent beds, riser flows and gas-solid flows near walls. Finally, we also investigate the physical origin of clustering as well as the turbulent behaviour of particle clusters.

Interfacial flows are omnipresent in various industrial and environmental processes including liquid atomization, oil extraction, continuous casting, etc. Numerical modelling of such flows is essential especially when turbulence steps, and large eddy simulation (LES) is a proper tool. However,  development of subgrid scale models is still a challenging shortcoming in this context. We are currently focused on development of structural and functional subgrid models for two-phase LES to take the steps toward mutliscale modelling of turbulent interfacial flows.

From the beginning of our research group we took the challenge to provide high quality validation data for our model developments by in-house experiments. Thus, we have developed a strong focus on signal and image processing as multiphase fluid mechanics is quite off the track of classic experimental fluid mechanics.