Parallel FE Electron-Photon Transport Analysis on 2-D Unstructured Mesh
A novel solution method has been developed to solve the coupled electron-photon transport problem on an unstructured triangular mesh. Instead of tackling the first-order form of the linear Boltzmann equation, this approach is based on the second-order form in conjunction with the conventional multi-group discrete-ordinates approximation. The highly forward-peaked electron scattering is modeled with a multigroup Legendre expansion derived from the Goudsmit-Saunderson theory. The finite element method is used to treat the spatial dependence. The solution method is unique in that the space-direction dependence is solved simultaneously, eliminating the need for the conventional inner iterations, a method that is well suited for massively parallel computers.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 4235
- Report Number(s):
- SAND99-0511C; TRN: US0101470
- Resource Relation:
- Conference: International Conference on Mathematics and Computation in Nuclear Applications, Madrid (ES), 09/27/1999--09/30/1999; Other Information: PBD: 2 Mar 1999
- Country of Publication:
- United States
- Language:
- English
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