SHERP

An Improvement of AUSM Schemes by Introducing the Pressure-Based Weight Functions

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Authors
Kim, Kyu Hong; Lee, Joon Ho; Rho, Oh Hyun
Issue Date
1998-07-15
Publisher
Elsevier
Citation
Computers and Fluids, 1998, 27(3), 311-316
Keywords
AUSMhypersonic
Abstract
This paper proposes a new scheme called AUSMPW (AUSM by pressure-based weight functions) improved from the previous AUSM schemes by introducing the pressure-based weight functions. AUSMPW scheme is essentially developed to improve such performances as the removal of numerical oscillations near a wall and overshoot phenomena behind shock waves, which are the main shortcomings of AUSM+ scheme. In order to investigate the computational characteristics of AUSMPW in detail, it has been applied to various hypersonic flow problems. The results, compared with those of AUSM type schemes, are summarized as follows; no carbuncle phenomena and high resolution at discontinuities such as shock waves, the removal of numerical oscillations, better computational convergence, and accuracy in boundary layer. It is concluded that AUSMPW can effectively be applied to complex hypersonic flow problems.
ISSN
0045-7930
Language
English
URI
http://hdl.handle.net/10371/6101
DOI
https://doi.org/10.1016/S0045-7930(97)00069-8
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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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