ISSN: 1546-962X
CODEN: JAIOAD
Published Online: 21 December 2005
Page Count: 6

Verification of MultiTrans Calculations by the VENUS-3 Benchmark Experiment

Kotiluoto, P
Research Scientist, VTT Technical Research Centre of Finland,

(Received 20 June 2005; accepted 29 September 2005)

Abstract

The MultiTrans software has been developed at VTT Technical Research Centre of Finland for 3D radiation transport problems. Adaptive tree multigrid technique is used as a deterministic solution method. This enables local refinement of the calculation grid combined with the use of effective multigrid acceleration on tree-structured nested grids: starting from a fast solution on coarse grid, successive solutions are obtained on finer and finer grids. In the MultiTrans code, simplified spherical harmonics (SP₃) radiation transport approximation is used. In order to test the applicability of the new MultiTrans code to reactor dosimetry problems, light water reactor pressure vessel steel (LWR-PVS) benchmark experiment VENUS-3 (with partial length shielded assemblies) was chosen. The results show good agreement to the experimental reaction rates of the VENUS-3 benchmark, demonstrating the applicability of the new MultiTrans code in reactor dosimetry.

Keywords:
MultiTrans, radiation transport, reactor dosimetry, tree multigrids, VENUS-3 benchmark

Paper ID: JAI13433
DOI: 10.1520/JAI13433
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