2-D Eulerian hydrodynamics with fluid interfaces, self-gravity and rotation
The purpose of this paper is to describe in detail the numerical approach we have developed over the past five years for solving 2-dimensional gas-dynamical problems in astrophysics involving inviscid compressible flow, self-gravitation, rotation, and fluid instabilities of the Rayleigh-Taylor and Kelvin-Helmholtz types. The computer code to be described has been applied most recently to modeling jets in radio galaxies (Norman et al. 1981, 1982) and is an outgrowth of a code developed for studying rotating protostellar collapse (Norman, Wilson and Barton 1980; Norman 1980). This basic methodology draws heavily on the techniques and experience of James R. Wilson and James M. LeBlanc of the Lawrence Livermore National Laboratory, and thus the code is designed to be a general purpose 2-D Eulerian hydrocode, and is characterized by a high degree of simplicity, robustness, modularity and speed. Particular emphases of this article are: (1) the recent improvements to the code's accuracy through the use of vanLeer's (1977) monotonic advection algorithm, (2) a discussion of the importance of what we term consistent advection, and (3) a description of a numerical techique for modeling dynamic fluid interfaces in multidimensional Eulerian calculations developed by LeBlanc. 23 refs., 14 figs.
- Research Organization:
- Los Alamos National Lab., NM (USA); Max-Planck-Institut fuer Physik und Astrophysik, Muenchen (Germany, F.R.)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6423115
- Report Number(s):
- LA-UR-85-4448; CONF-820836-3; ON: DE86004749
- Country of Publication:
- United States
- Language:
- English
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640410 -- Fluid Physics-- General Fluid Dynamics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASTROPHYSICS
COMPRESSIBLE FLOW
COMPUTER CALCULATIONS
FLUID FLOW
FLUID MECHANICS
GRAVITATIONAL COLLAPSE
HYDRODYNAMICS
INTERFACES
MATHEMATICAL MODELS
MECHANICS
TWO-DIMENSIONAL CALCULATIONS