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Godunov methods on a staggered mesh. An improved artificial viscosity.

DE92011973

Publication Date	1990
Personal Author	Christensen, R. B.
Page Count	11
Abstract	We present a method for obtaining a High-Order, Non-Oscillatory hydro scheme for staggered mesh, internal energy-based codes using a simple modification of the standard von-Neumann artificial viscosity method. This modification is derived by applying the Godunov technique directly to a staggered mesh and replacing the full Riemann solution by a particular approximate Riemann solver. It will be shown to deliver results much better than the standard scheme and comparable to other modern hydro methods.
Keywords	Viscosity Fluid Mechanics Hydrodynamics Numerical Solution Shock Waves Meetings Computational grids EDB/450200 EDB/420400
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	46B - Fluid Mechanics
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	1990 nuclear explosives code developers' conference, Monterey, CA (United States), 6-9 Nov 1990. Sponsored by Department of Energy, Washington, DC.
Document Type	Conference Proceedings
NTIS Issue Number	199221
Contract Number	W-7405-ENG-48

Godunov methods on a staggered mesh. An improved artificial viscosity.

Godunov methods on a staggered mesh. An improved artificial viscosity.
DE92011973

Publication Date	1990
Personal Author	Christensen, R. B.
Page Count	11
Abstract	We present a method for obtaining a High-Order, Non-Oscillatory hydro scheme for staggered mesh, internal energy-based codes using a simple modification of the standard von-Neumann artificial viscosity method. This modification is derived by applying the Godunov technique directly to a staggered mesh and replacing the full Riemann solution by a particular approximate Riemann solver. It will be shown to deliver results much better than the standard scheme and comparable to other modern hydro methods.
Keywords	Viscosity Fluid Mechanics Hydrodynamics Numerical Solution Shock Waves Meetings Computational grids EDB/450200 EDB/420400
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	46B - Fluid Mechanics
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	1990 nuclear explosives code developers' conference, Monterey, CA (United States), 6-9 Nov 1990. Sponsored by Department of Energy, Washington, DC.
Document Type	Conference Proceedings
NTIS Issue Number	199221
Contract Number	W-7405-ENG-48