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POSITIVE SCHEME NUMERICAL SIMULATION OF HIGH MACH NUMBER ASTROPHYSICAL JETS
Youngsoo Ha,Carl L. Gardner 한국산업응용수학회 2008 한국산업응용수학회 학술대회 논문집 Vol.4 No.3
High Mach number astrophysical jets are simulated using a positive scheme, and are compared with WENO-LF simulations. A version of the positive scheme has allowed us to simulate astrophysical jets with radiative cooling up to Mach number 270 with respect to the heavy jet gas, a factor of two times higher than the maximum Mach number attained with the WENO schemes and ten times higher than with CLAWPACK. Such high Mach numbers occur in many settings in astrophysical flows, so it is important to develop a scheme that can simulate at these Mach numbers.