Author(s): Yannick Marschall; George Constantinescu; Robert M. Boes; David F. Vetsch
Linked Author(s): David Vetsch, George Constantinescu, Robert Boes
Keywords: No Keywords
Abstract: In this case study we compare two different numerical approaches, namely URANS (Unsteady ReynoldsAveraged Navier-Stokes) and DES (Detached-Eddy Simulation), to simulate the flow field around a semiellipsoid mounted on a flat plate. The considered configuration is in reference to an isolated large boulder in an open stream. The results of the numerical simulations are compared with experimental laboratory data for model validation. We show that the results obtained with DES are in very good agreement with the lab data. By contrast, the more cost-efficient URANS method leads to a different flow pattern in the near-wake region and hence to very poor prediction of the lift and drag forces acting on the semi-ellipsoid.
Year: 2022