Limits of Riemann Solutions for Isentropic MHD in a Variable Cross-Section Duct as Magnetic Field Vanishes  

作　　者：Wancheng SHENG Tao XIAO 

机构地区：[1]Department of Mathematics,Shanghai University,Shanghai 200444,China [2]Shanghai Aircraft Design and Research Institute,Shanghai 201210,China

出　　处：《Chinese Annals of Mathematics,Series B》2024年第4期637-660,共24页数学年刊（B辑英文版）

基　　金：supported by the National Natural Science Foundation of China(No.12171305)。

摘　　要：The stability for magnetic field to the solution of the Riemann problem for the polytropic fluid in a variable cross-section duct is discussed.By the vanishing magnetic field method,the stable solutions are determined by comparing the limit solutions with the solutions of the Riemann problem for the polytropic fluid in a duct obtained by the entropy rate admissibility criterion.

关 键 词：Variable duct Magnetogasdynamics Riemann problem Stability Vanishing magnetic field method 

分 类 号：O186.12[理学—数学]