PhD Student

An new turbulence model for Very Large Eddy Simulation, based on the extended k-ε model of Kim and Chen is developed. Introducing an adaptive filtering technique the model can distinguish between numerically resolved and unresolved parts of flow. The model is applied to the unstable vortex motion in a pipe trifurcation. This flow phenomenon could not be predicted with classical RANS methods and usually used turbulence models. By applying the VLES method with the new turbulence model the phenomenon was well predicted and the results agree quite reasonable with measurement data