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Energy Transport in Matter with Rapidly Changing States

W. Höbel, B. Goel, A. L. Ni, H. Marten

Nuclear Science and Engineering

Volume 137 / Number 3 / March 2001 / Pages 334-351


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The Godunov method that tracks nonstationary fronts and interfaces as boundaries of subregions moving with time is extended to include radiation transport. In each subregion and at each time step, a new grid is created by use of boundary-fitted coordinates. The radiation transport is performed in a multiangle-multifrequency approach. The numerical method is based on a finite volume method in the space time-domain, and the hydrodynamic fluxes are calculated using the solution of Riemann problems. Numerical results are shown for some selected problems to demonstrate the efficiency of this approach.

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