Numerical simulation of hot gas mixing with leakage flow at HTR-PM reactor core outlet

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20160902019262

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(1) Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing; 100084, China; (2) School of Aerospace, Tsinghua University, Beijing; 100084, China | 1600年 / et al.; GLSEQ, LLC/SCI Technologies. Inc; Hitachi-GE Nuclear Energy, Ltd.; Mitsubishi Heavy Industries, Ltd. (MHI); Toshiba Corporation; Westinghouse Electric Company卷 / American Society of Mechanical Engineers (ASME), United States期

关键词：

The numerical simulation for the design of hot gas mixing structure at the reactor outlet of Pebble-bed Module High Temperature gas-cooled Reactor (HTR-PM) are carried out by using the Fluent code with the consideration of the leakage flow out of the reactor core. According to the profiles of temperature; pressure and velocity; the thermal mixing is mainly produced by the secondary flow such as the vortices which is perpendicular or parallel to the main flow direction. In addition; the pressure drop is mainly caused by the local pressure loss leading by the sudden change of flow area and direction which is also the main reason of production of the secondary flow. The numerical simulation results indicate that the design of hot gas mixing structure at HTR-PM reactor outlet can fulfill the requirement of high thermal mixing performance and low pressure drop under the rated condition by taking account into the leakage flow out of reactor. Copyright © 2015 by [!text type='JS']JS[!/text]ME;

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118695

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