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- W1983127007 abstract "We present a fully Lagrangian conservation form of the general relativistic hydrodynamic equations for perfect fluids with artificial viscosity in a given arbitrary background spacetime. This conservation formulation is achieved by choosing suitable Lagrangian time evolution variables, from which the generic fluid variables of rest-mass density, 3-velocity, and thermodynamic pressure have to be determined. We present the corresponding equations for an ideal gas and show the existence and uniqueness of the solution. On the basis of the Lagrangian formulation we have developed a three-dimensional general relativistic smoothed particle hydrodynamics (SPH) code using the standard SPH formalism as known from nonrelativistic fluid dynamics. One-dimensional simulations of a shock tube and a wall shock are presented together with a two-dimensional test calculation of an inclined shock tube. With our method we can model ultrarelativistic fluid flows including shocks with Lorentz factors of even 1000." @default.
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- W1983127007 date "2000-03-10" @default.
- W1983127007 modified "2023-09-23" @default.
- W1983127007 title "Smoothed Particle Hydrodynamics Simulations of Ultrarelativistic Shocks with Artificial Viscosity" @default.
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- W1983127007 doi "https://doi.org/10.1086/308482" @default.
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