Introducing the HOMER numerical benchmark: LPT and DA datasets of turbulent flow over moving panels

Kurzfassung

Following the First Challenge on Lagrangian Particle Tracking (LPT) and Data Assimilation (DA), organized in 2020 (see http://cfdforpiv.dlr.de/ and Leclaire et al.), the next numerical benchmark activities within the HOMER project take as their objectives to assess LPT and DA algorithms in a fluid-structure interaction situation. The physical situation that has been retained is that of a turbulent wall-bounded flow, with a part of the wall consisting of a flexible panel entrained in forced oscillation, a situation which has been investigated experimentally within one of the HOMER tasks, led by the Delft University of Technology. In the numerical benchmark, a spanwise infinite cylinder has been added within the turbulent boundary layer, in order to enhance the intensity of turbulent fluctuations in the flow, and of pressure fluctuations at the wall.