Publications
Detailed Information
Methods for the Accurate Computations of Hypersonic Flows, I : AUSMPW+ Scheme
Cited 304 time in
Web of Science
Cited 482 time in Scopus
- Authors
- Issue Date
- 2001-11
- Publisher
- Elsevier
- Citation
- J. Comput. Phys. 174, 38 (2001)
- Keywords
- AUSMPW+ ; AUSMPW ; AUSM+ ; oblique shock ; accuracy ; robustness ; efficiency ; hypersonic flows ; equilibrium gas ; nonequilibrium gas
- 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.
- ISSN
- 0021-9991
- Language
- English
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.