Well-balanced discontinuous Galerkin methods with hydrostatic reconstruction for the Euler equations with gravitation
Well-balanced discontinuous Galerkin methods with hydrostatic reconstruction for the Euler equations with gravitation
复制标题
具有引力的欧拉方程的静水力重构的良好平衡间断伽辽金法
DOI:
10.1016/j.jcp.2017.09.063
复制
发表时间:
2018
影响因子:
4.1
通讯作者:
Yulong Xing
中科院分区:
文献类型:
--
作者:
Gang Li;Yulong Xing
Many interesting astrophysical and atmospheric problems involve flows near the hydrostatic equilibrium state where the pressure gradient is balanced by the gravitational force. In this paper, we design high order well-balanced discontinuous Galerkin methods for the Euler equations with gravitation, which can preserve the discrete polytropic and isothermal hydrostatic balance states exactly. To achieve the well-balancedness, we propose to combine the numerical fluxes based on a generalized hydrostatic reconstruction, with an equilibrium state recovery technique and a novel source term approximation. Extensive one- and two-dimensional numerical examples are shown to demonstrate the performance of our well-balanced methods, and comparison with non-well-balanced results is included to illustrate the importance of maintaining the balance between pressure gradient and gravitational force numerically.
登录
查看更多内容
影响因子:
4.7
作者:
Y. Xing;Xiangxiong Zhang;Chi-Wang Shu
通讯作者:
Y. Xing;Xiangxiong Zhang;Chi-Wang Shu
影响因子:
4.1
作者:
Jiang, GS;Shu, CW
通讯作者:
Shu, CW
DOI:
10.1137/090758416
发表时间:
2010-09
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
F. Bouchut;T. M. D. Luna
通讯作者:
F. Bouchut;T. M. D. Luna
影响因子:
4.1
作者:
Nicola Botta;R. Klein;Susanne Langenberg;Susanne Lützenkirchen;F.-W Gerstengarbe;U. Werner
通讯作者:
Nicola Botta;R. Klein;Susanne Langenberg;Susanne Lützenkirchen;F.-W Gerstengarbe;U. Werner
影响因子:
6.5
作者:
R. Käppeli;Siddhartha Mishra
通讯作者:
R. Käppeli;Siddhartha Mishra