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Computational Relativistic Astrophysics Using the Flow Field-Dependent Variation TheoryWe present our method for solving general relativistic nonideal hydrodynamics. Relativistic effects become pronounced in such cases as jet formation from black hole magnetized accretion disks which may lead to the study of gamma-ray bursts. Nonideal flows are present where radiation, magnetic forces, viscosities, and turbulence play an important role. Our concern in this paper is to reexamine existing numerical simulation tools as to the accuracy and efficiency of computations and introduce a new approach known as the flow field-dependent variation (FDV) method. The main feature of the FDV method consists of accommodating discontinuities of shock waves and high gradients of flow variables such as occur in turbulence and unstable motions. In this paper, the physics involved in the solution of relativistic hydrodynamics and solution strategies of the FDV theory are elaborated. The general relativistic astrophysical flow and shock solver (GRAFSS) is introduced, and some simple example problems for computational relativistic astrophysics (CRA) are demonstrated.
Document ID
20020048692
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Richardson, G. A.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Chung, T. J.
(Alabama Univ. Huntsville, AL United States)
Date Acquired
August 20, 2013
Publication Date
April 1, 2002
Publication Information
Publication: The Astrophysical Journal Supplement Series
Publisher: American Astronomical Society
Volume: 139
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Other

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