Inclusion of Retardation Effects in Hydrodynamical Calculations

T. Kodama, R. Donangelo and M. W. Guidry
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T. Kodama: Instituto de Física, Universidade Federal do Rio de Janeiro, C.P. 68528, 21945-970 Rio de Janeiro, Brazil
R. Donangelo: Instituto de Física, Universidade Federal do Rio de Janeiro, C.P. 68528, 21945-970 Rio de Janeiro, Brazil
M. W. Guidry: Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996-1200, USA;

International Journal of Modern Physics C (IJMPC), 1998, vol. 09, issue 05, 745-758

Abstract: In numerical large-scale hydrodynamics calculations, such as the description of a supernova explosion, instantaneous thermalization of the fluid matter is assumed independently of the size of the volume element used in the calculation. One expects, however, the appearance of transient processes such as convection currents, vortices, and other collective motion on smaller and smaller scales, which can delay equilibration. To account for these effects in a simple one-dimensional hydrodynamical calculation, we introduce retardation in the hydrodynamic equations and show that, when strong shocks are present, such effects may have considerable influence on the evolution of the system.

Keywords: Retardation Effects; Hydrodynamics; Supernova Explosion (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1142/S0129183198000650

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