Improved understanding of inter-subchannel thermal mixing

提高对子通道间热混合的理解

• 批准号: 400017-2010
• 负责人: Lightstone, Marilyn
• 金额: $ 1.55万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=498319
• 关键词: Improved; understanding; inter; subchannel; thermal

Mathematical modelling of turbulent mixing in a nuclear fuel rod bundle of a nuclear reactor core is integral to nuclear reactor safety analysis. In the reactor core, the heat generation within the fuel rods is removed by the coolant which flows axially past the rods. The turbulent interchange mixing perpendicular to the main axial flow contributes to the homogenisation of the temperature distribution of the fluid contained within the subchannels. This mixing plays an important role in determining the heat transfer from the fuel rods and hence the fuel rod temperature which is of critical importance to nuclear safety analysis.

核反应堆堆芯核燃料棒束湍流混合的数学模拟是核反应堆安全分析不可或缺的一部分。 在反应堆堆芯中，燃料棒内产生的热量被轴向流过燃料棒的冷却剂带走。 垂直于主轴向流的湍流交换混合有助于子通道内包含的流体的温度分布的均匀化。 这种混合在确定来自燃料棒的热传递以及因此确定燃料棒温度方面起着重要作用，燃料棒温度对于核安全分析至关重要。