Positive scheme numerical simulation of high Mach number astrophysical jets

被引：28

作者：

Ha, Youngsoo ^{[2
]}

Gardner, Carl L. ^{[1
]}

机构：

[1] Arizona State Univ, Dept Math & Stat, Tempe, AZ 85287 USA

[2] Korea Adv Inst Sci & Technol, Div Appl Math, Taejon 305701, South Korea

来源：

JOURNAL OF SCIENTIFIC COMPUTING | 2008年 / 34卷 / 03期

关键词：

astrophysical jets; radiative cooling; positive scheme simulations;

D O I：

10.1007/s10915-007-9165-5

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

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.

引用

页码：247 / 259

页数：13

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