SHERP

Wavenumber-Extended High-Order Oscillation Control Finite Volume Schemes for Multi-dimensional Aeroacoustic Computations

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Authors
Kim, Sungtae; Lee, Soogab; Kim, Kyu Hong
Issue Date
2008-04
Publisher
Elsevier
Citation
J. Comput. Phys. 227(8) 4089-4122
Keywords
Computational aeroacousticsDispersion relationWavenumber-extended optimizationM-AUSMPW+MLPMuzzle blast flow
Abstract
A new numerical method toward accurate and efficient aeroacoustic computations of multi-dimensional compressible flows has been developed. The core idea of the developed scheme is to unite the advantages of the wavenumber-extended optimized scheme and M-AUSMPW+/MLP schemes by predicting a physical distribution of flow variables more accurately in multi-space dimensions. The wavenumber-extended optimization procedure for the finite volume approach based on the conservative requirement is newly proposed for accuracy enhancement, which is required to capture the acoustic portion of the solution in the smooth region. Furthermore, the new distinguishing mechanism which is based on the Gibbs phenomenon in discontinuity, between continuous and discontinuous regions is introduced to eliminate the excessive numerical dissipation in the continuous region by the restricted application of MLP according to the decision of the distinguishing function. To investigate the effectiveness of the developed method, a sequence of benchmark simulations such as spherical wave propagation, nonlinear wave propagation, shock tube problem and vortex preservation test problem are executed. Also, throughout more realistic shock-vortex interaction and muzzle blast flow problems, the utility of the new method for aeroacoustic applications is verified by comparing with the previous numerical or experimental results.
ISSN
0021-9991
Language
English
URI
http://hdl.handle.net/10371/6175
DOI
https://doi.org/10.1016/j.jcp.2007.12.013
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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