Moving and reactive boundary conditions in moving-mesh hydrodynamics

被引:6
|
作者
Prust, Logan J. [1 ]
机构
[1] Univ Wisconsin, Dept Phys, 3135 North Maryland Ave, Milwaukee, WI 53211 USA
基金
美国国家科学基金会;
关键词
hydrodynamics; methods: numerical; SIMULATIONS; ENERGY; STARS; WAVE;
D O I
10.1093/mnras/staa1031
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We outline the methodology of implementing moving boundary conditions into the moving-mesh code MANGA. The motion of our boundaries is reactive to hydrodynamic and gravitational forces. We discuss the hydrodynamics of a moving boundary as well as the modifications to our hydrodynamic and gravity solvers. Appropriate initial conditions to accurately produce a boundary of arbitrary shape are also discussed. Our code is applied to several test cases, including a Sod shock tube, a Sedov-Taylor blast wave, and a supersonic wind on a sphere. We show the convergence of conserved quantities in our simulations. We demonstrate the use of moving boundaries in astrophysical settings by simulating a common envelope phase in a binary system, in which the companion object is modelled by a spherical boundary. We conclude that our methodology is suitable to simulate astrophysical systems using moving and reactive boundary conditions.
引用
收藏
页码:4616 / 4626
页数:11
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