Dissertation
AXISYMMETRIC HYDRODYNAMICS IN NUMERICAL RELATIVITY USING A MULTIPATCH METHOD
Doctor of Philosophy (PhD), Washington State University
01/2020
Handle:
https://hdl.handle.net/2376/108882
Abstract
We describe a method of implementing the axisymmetric evolution of general-relativistic hydrodynamics and magnetohydrodynamics through modification of a multipatch grid scheme. In order to ease the computational requirements required to evolve the post-merger phase of systems involving binary compact massive objects in numerical relativity it is often beneficial to take advantage of these system's tendency to rapidly settle into states that are nearly axisymmetric, allowing for evolution on secular timescales. We implement this scheme in the Spectral Einstein Code (SpEC) and show the results of application of this method to four systems implementing separate tests using viscosity, magnetic fields, and neutrino cooling. Our results show that this method can be used to quickly allow already existing 3D infrastructure that makes use of local coordinate system transformations to be made to run in axisymmetric 2D with comparable results.
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Details
- Title
- AXISYMMETRIC HYDRODYNAMICS IN NUMERICAL RELATIVITY USING A MULTIPATCH METHOD
- Creators
- Jerred Jesse
- Contributors
- Matthew D Duez (Advisor)Guy Worthey (Committee Member)Sukanta Bose (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Physics and Astronomy, Department of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Number of pages
- 83
- Identifiers
- 99900581413201842
- Language
- English
- Resource Type
- Dissertation