Edge-based reconstruction schemes for prediction of near field flow region in complex aeroacoustics problems

摘要

The present paper is devoted to the Edge-Based Reconstruction (EBR) schemes for solving Euler equations on unstructured tetrahedral meshes which can be used for prediction of complex turbulent flows. The schemes provide lower computational costs and higher accuracy in simulating the near field flow region considered as a distributed acoustic source in aeroacoustic problems. In this paper we give a refined formulation of EBR schemes, analyses of their properties and possible extensions. The 5th theoretically reachable order EBR scheme is verified on the simulation of monopole acoustic source in a subsonic uniform flow. The results of the simulation of turbulent flow around two rectangular cylinders obtained with the use of EBR scheme are shown. Both cases were solved within the FP7 VALIANT project.