HTGR Knowledge Base

Conference Article: Flow Field Analysis of the Hot gas chamber of the 10 MW High Temperature Reactor

Abstract

The flow field in the hot gas chamber of the 10 MW High Temperature Gas Cooled Reactor (HTR-10) was studied with the Computational Fluid Dynamics (CFD) program CFX5. The velocity field and temperature field in the hot gas chamber and hot gas duct were obtained. The temperature mixing coefficients in the hot gas duct were also calculated, and the simulation’s accuracy and reliability were validated by comparison with the experimental results. Two additional design schemes of the hot gas chamber were calculated in order to determine the optimal hot gas chamber to minimize temperature differences at the inlet of the heat exchanging components. The results indicated that the temperature mixing coefficient in the hot gas duct increases with the distance from the hot gas chamber. The design scheme of the hot gas chamber in the HTR-10 could be improved through removing the ribs and adding more gas inlets to accelerate heat transfer between air flows with different temperatures.

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Reference:

Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004

International Atomic Energy Agency, Vienna (Austria)

HTR-2004, pp:1-10