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Methods for the Accurate Computations of Hypersonic Flows - I. AUSMPW+ Scheme
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Kyu Hong | - |
dc.contributor.author | Kim, Chongam | - |
dc.contributor.author | Rho, Oh-Hyun | - |
dc.date.accessioned | 2009-08-05T03:46:58Z | - |
dc.date.available | 2009-08-05T03:46:58Z | - |
dc.date.issued | 2001-01 | - |
dc.identifier.citation | J. Comput. Phys. 174(1), 38-80 | en |
dc.identifier.issn | 0021-9991 | - |
dc.identifier.uri | https://hdl.handle.net/10371/6152 | - |
dc.description.abstract | In order to overcome some difficulties observed in the computation of hypersonic flows, a robust, accurate and efficient numerical scheme based on AUSM-type splitting is developed. Typical symptoms appearing in the application of AUSM-type schemes for high-speed flows, such as pressure wiggles near a wall and overshoots across a strong shock, are cured by introducing weighting functions based on pressure (AUSMPW). A newly improved version of the AUSMPW scheme, called AUSMPW+, is developed to increase the accuracy and computational efficiency of AUSMPW in capturing an oblique shock without compromising robustness. With a new definition of the numerical speed of sound at a cell interface, capturing an oblique shock is remarkably enhanced, and it can be proved that an unphysical expansion shock is completely excluded. With simple Mach number interpolation functions, AUSMPW+ is efficient to implement. Extensive numerical tests from supersonic frozen flows to hypersonic nonequilibrium flows validate that the AUSMPW+ scheme provides accurate solutions for the computation of high-speed flows. | en |
dc.description.sponsorship | This research was supported in part by a grant from the BK-21 Program for Mechanical and Aerospace
Engineering Research at Seoul National University and a grant from theKorea Science and Engineering Foundation (Grant 98-0200-14-01-3). The authors appreciate the referees for their careful and rigorous comments on this manuscript. | en |
dc.language.iso | en | - |
dc.publisher | Elsevier | en |
dc.subject | AUSMPW+ | en |
dc.subject | AUSMPW | en |
dc.subject | AUSM+ | en |
dc.subject | oblique shock | en |
dc.subject | accuracy | en |
dc.subject | robustness | en |
dc.subject | hypersonic flows | en |
dc.subject | equilibrium gas | en |
dc.subject | nonequilibrium gas | en |
dc.title | Methods for the Accurate Computations of Hypersonic Flows - I. AUSMPW+ Scheme | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 김규홍 | - |
dc.contributor.AlternativeAuthor | 김종암 | - |
dc.contributor.AlternativeAuthor | 노오현 | - |
dc.identifier.doi | 10.1006/jcph.2001.6873 | - |
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