23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-R33

THE STUDY OF MONOTONICITY OF AUSM-TYPE SCHEMES IN SHOCK DISCONTINUITIES

K. H. Kim (2), C. Kim (1), O. Rho (1), K. Lee (2)
(1) Seoul National University, 151-742, Seoul, Korea; (2) Sejong-Lockheed Martin Aerospace Research Center, Korea

Keywords: ausmpw+, shock discontinuity, monotonic characteristic, oscillation, sonic transition position

The shock capturing abilities of AUSM-type schemes are compared each other in the viewpoint of monotonicity. It is verified that AUSM+ always shows larger oscillations and AUSMPW+ may show a little oscillation according to a sonic transition position. Modified AUSMPW+ can capture a shock wave exactly with monotonic characteristic In addition, it could capture shocks robustly regardless to a sonic transition position

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