A composite scheme for gas dynamics in Lagrangian coordinates
Journal Article
·
· Journal of Computational Physics
- Los Alamos National Lab., NM (United States)
One cycle of a composite finite difference scheme is defined as several time steps of an oscillatory scheme such as Lax-Wendroff followed by one step of a diffusive scheme such as Lax-Friedrichs. The authors apply this idea to gas dynamics in Lagrangian coordinates. They show numerical results in two dimensions for Noh`s infinite strength shock problem and the Sedov blast wave problem, and for several one-dimensional problems including a Riemann problem with a contact discontinuity. For Noh`s problem the composite scheme produces a better result than that obtained with a more conventional Lagrangian code.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 343660
- Journal Information:
- Journal of Computational Physics, Vol. 150, Issue 2; Other Information: PBD: 10 Apr 1999
- Country of Publication:
- United States
- Language:
- English
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