二维Lagrangian坐标系下可压气动方程组的间断Petrov-Galerkin方法(英文)
[Abstract]:An element central scheme for solving pneumatic equations in Lagrangian coordinate system in rectangular grid is constructed. The control volume discontinuity Petrov-Galerkin method is used for spatial discretization, and the second order Runge-Kutta method is used for time discretization. The limiter is used to suppress the non-physical concussion and ensure the stability of the RKCV algorithm. The constructed algorithm can ensure the local conservation of physical quantities. Compared with Runge-Kutta intermittent Galerkin (RKDG) method, the calculation formula of RKCV method is less than one integral term, which makes the calculation easier. Some numerical examples are given to verify the reliability and efficiency of the algorithm.
【作者单位】: 包头师范学院数学科学学院;北京应用物理与计算数学研究所计算物理实验室;
【基金】:National Natural Science Foundation of China(11261035,11571002) Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region(NJYT-15-A07) Natural Science Foundation of Inner Mongolia Autonomous Region,China(2015MS0108,2012MS0102) Science Research Foundation of Institute of Higher Education of Inner Mongolia Autonomous Region,China(NJZZ12198) Science and Technology Development Foundation of CAEP(2015B0101021) Defense Industrial Technology Development Program(B1520133015)
【分类号】:O241.82
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