The boundary data immersion method for compressible flows with application to aeroacoustics

JOURNAL OF COMPUTATIONAL PHYSICS

卷:333

Article

Schlanderer, Stefan C.¹  Weymouth, Gabriel D.¹  Sandberg, Richard D.² 

[1] Univ Southampton, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

[2] Univ Melbourne, Dept Mech Engn, Melbourne, Vic 3010, Australia

关键词: Boundary data immersion;    Immersed boundary method;    Aeroacoustics;    Compressible fluid flow;    Flow induced noise;    Noise from moving bodies;   

DOI  :  10.1016/j.jcp.2016.12.050

来源: Elsevier

【 摘 要 】

This paper introduces a virtual boundary method for compressible viscous fluid flow that is capable of accurately representing moving bodies in flow and aeroacoustic simulations. The method is the compressible extension of the boundary data immersion method (BDIM, Maertens & Weymouth (2015), [18]). The BDIM equations for the compressible Navier-Stokes equations are derived and the accuracy of the method for the hydrodynamic representation of solid bodies is demonstrated with challenging test cases, including a fully turbulent boundary layer flow and a supersonic instability wave. In addition we show that the compressible BDIM is able to accurately represent noise radiation from moving bodies and flow induced noise generation without any penalty in allowable time step. (C) 2017 Elsevier Inc. All rights reserved.

【 授权许可】

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