Optimization of hybrid aeroacoustic computations of an industrial confined flow through mesh coarsening techniques

摘要

The accuracy of predictions obtained using acoustic analogies depends on an appropriate handling of the sources. In particular, the mapping of flow data from the fine CFD mesh to the coarser acoustic mesh requires conserving the information over a large range of flow scales. In this work, conservative mapping techniques are investigated and applied to a turbulent confined flow case. Different mapping schemes are studied and compared for the chosen geometry.