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류동수

Ryu, Dongsu
Astrophysics Lab.
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Numerical relativistic hydrodynamics based on the total variation diminishing scheme

Author(s)
Choi, EunwooRyu, Dongsu
Issued Date
2005-11
DOI
10.1016/j.newast.2005.06.010
URI
https://scholarworks.unist.ac.kr/handle/201301/18502
Fulltext
http://www.sciencedirect.com/science/article/pii/S1384107605000898
Citation
NEW ASTRONOMY, v.11, no.2, pp.116 - 129
Abstract
This paper describes a multidimensional hydrodynamic code which can be used for studies of relativistic astrophysical flows. The code solves the special relativistic hydrodynamic equations as a hyperbolic system of conservation laws based on the total variation diminishing (TVD) scheme. It uses a new set of conserved quantities and employs an analytic formula for transformation from the conserved quantities in the reference frame to the physical quantities in the local rest frame. Several standard tests, including relativistic shock tubes, a relativistic wall shock, and a relativistic blast wave, are presented to demonstrate that the code captures discontinuities correctly and sharply in ultrarelativistic regimes. The robustness and flexibility of the code are demonstrated through test simulations of the relativistic Hawley-Zabusky shock and a relativistic extragalactic jet. (c) 2005 Elsevier B.V. All rights reserved
Publisher
ELSEVIER SCIENCE BV
ISSN
1384-1076
Keyword (Author)
hydrodynamicsnumerical methodsrelativity
Keyword
PIECEWISE PARABOLIC METHODDIFFERENCE-SCHEMESJETSSIMULATIONSCODE

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