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Methods for the Accurate Computations of Hypersonic Flows - I. AUSMPW+ Scheme

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dc.contributor.authorKim, Kyu Hong-
dc.contributor.authorKim, Chongam-
dc.contributor.authorRho, Oh-Hyun-
dc.date.accessioned2009-08-05T03:46:58Z-
dc.date.available2009-08-05T03:46:58Z-
dc.date.issued2001-01-
dc.identifier.citationJ. Comput. Phys. 174(1), 38-80en
dc.identifier.issn0021-9991-
dc.identifier.urihttps://hdl.handle.net/10371/6152-
dc.description.abstractIn 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.sponsorshipThis 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.isoen-
dc.publisherElsevieren
dc.subjectAUSMPW+en
dc.subjectAUSMPWen
dc.subjectAUSM+en
dc.subjectoblique shocken
dc.subjectaccuracyen
dc.subjectrobustnessen
dc.subjecthypersonic flowsen
dc.subjectequilibrium gasen
dc.subjectnonequilibrium gasen
dc.titleMethods for the Accurate Computations of Hypersonic Flows - I. AUSMPW+ Schemeen
dc.typeArticleen
dc.contributor.AlternativeAuthor김규홍-
dc.contributor.AlternativeAuthor김종암-
dc.contributor.AlternativeAuthor노오현-
dc.identifier.doi10.1006/jcph.2001.6873-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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