A numerical study of the target system of an ADSS with different flow guides |
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Authors: | K Arul Prakash B V Rathish Kumar G Biswas |
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Institution: | (1) Department of Mechanical Engineering, Indian Institute of Technology, Kanpur, 208 016, India;(2) Department of Mathematics, Indian Institute of Technology, Kanpur, 208 016, India |
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Abstract: | The mechanical design of the target module of an accelerator driven subcritical nuclear reactor system (ADSS) calls for an
analysis of the related thermal-hydraulic issues because of large amount of heat deposition in the spallation region during
the course of nuclear interactions with the molten lead bismuth eutectic (LBE) target. The LBE also should carry the entire
heat generated as a consequence of the spallation reaction. The problem of heat removal by the LBE is a challenging thermal-hydraulic
issue. For this, one has to examine the flows of low Prandtl number fluids (LBE) in a complex ADSS geometry. In this study,
the equations governing the laminar flow and thermal energy are solved numerically using the streamline upwind Petrov-Galerkin
(SUPG) finite element (FE) method. The target systems with a straight and a nozzle guide have been considered. The principal
purpose of the analysis is to trace the flow and temperature distribution and thereby to check the suitability of the flow
guide in avoiding the recirculation or stagnation zones in the flow space that may lead to hot spots.
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Keywords: | Accelerator driven sub-critical nuclear reactor system spallation target system finite element method streamline upwind Petrov-Galerkin technique 180° bend flow |
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