The Sedov Blast Wave as a Radial Piston Verification Test
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). XCP-Computational Physics Division
The Sedov blast wave is of great utility as a verification problem for hydrodynamic methods. The typical implementation uses an energized cell of finite dimensions to represent the energy point source. We avoid this approximation by directly finding the effects of the energy source as a boundary condition (BC). Furthermore, the proposed method transforms the Sedov problem into an outward moving radial piston problem with a time-varying velocity. A portion of the mesh adjacent to the origin is removed and the boundaries of this hole are forced with the velocities from the Sedov solution. This verification test is implemented on two types of meshes, and convergence is shown. Our results from the typical initial condition (IC) method and the new BC method are compared.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1338730
- Report Number(s):
- LA-UR-15-27276
- Journal Information:
- Journal of Verification, Validation and Uncertainty Quantification, Vol. 1, Issue 3; ISSN 2377-2158
- Publisher:
- ASMECopyright Statement
- Country of Publication:
- United States
- Language:
- English
Verification Assessment of Piston Boundary Conditions for Lagrangian Simulation of the Guderley Problem
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journal | September 2017 |
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