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

Journal article (2017)

Authors

Stefan C. Schlanderer University of Southampton
Gabriel D. Weymouth University of Southampton
Richard D. Sandberg University of Melbourne
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External organisation
Aeroacoustics Immersed boundary method Boundary data immersion Compressible fluid flow Flow induced noise Noise from moving bodies
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Published Date

2017

Language

English

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Abstract

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.