Coupled electron-photon radiation transport
Conference
·
OSTI ID:750243
- Sandia National Laboratories
Massively-parallel computers allow detailed 3D radiation transport simulations to be performed to analyze the response of complex systems to radiation. This has been recently been demonstrated with the coupled electron-photon Monte Carlo code, ITS. To enable such calculations, the combinatorial geometry capability of ITS was improved. For greater geometrical flexibility, a version of ITS is under development that can track particles in CAD geometries. Deterministic radiation transport codes that utilize an unstructured spatial mesh are also being devised. For electron transport, the authors are investigating second-order forms of the transport equations which, when discretized, yield symmetric positive definite matrices. A novel parallelization strategy, simultaneously solving for spatial and angular unknowns, has been applied to the even- and odd-parity forms of the transport equation on a 2D unstructured spatial mesh. Another second-order form, the self-adjoint angular flux transport equation, also shows promise for electron transport.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 750243
- Report Number(s):
- SAND99-2799C
- Country of Publication:
- United States
- Language:
- English
Similar Records
3D unstructured-mesh radiation transport codes
Parallel 3-D spherical-harmonics transport methods
Radiation transport on unstructured mesh with parallel computers
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:332743
Parallel 3-D spherical-harmonics transport methods
Technical Report
·
Fri Aug 01 00:00:00 EDT 1997
·
OSTI ID:515629
Radiation transport on unstructured mesh with parallel computers
Journal Article
·
Sat Jul 01 00:00:00 EDT 2000
· Transactions of the American Nuclear Society
·
OSTI ID:20093665