期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 494, 期 4, 页码 4616-4626出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa1031
关键词
hydrodynamics; methods: numerical
资金
- NASA Astrophysical Theory Program (ATP) through NASA [NNH17ZDA001N-ATP]
- National Science Foundation (NSF) [ACI-1053575]
- NASA [RFP19]
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.
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