The Sedov Blast Wave as a Radial Piston Verification Test [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description: Article numbers 031,001 : digital, PDF file
Additional Creators: Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

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.

Report Numbers

E 1.99:la-ur--15-27276
la-ur--15-27276

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Note

Published through SciTech Connect.
06/22/2016.
"la-ur--15-27276"
Journal of Verification, Validation and Uncertainty Quantification 1 3 ISSN 2377-2158 AM
Clark Pederson; Bart Brown; Nathaniel Morgan.

Funding Information

AC52-06NA25396

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