基于CFD方法的行波堆燃料组件结构优化设计研究

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Optimized Design for TWR Assembly by CFD Calculations

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institution of China, Chengdu, 610041, China

摘要: 前期在行波堆燃料组件的设计研究中发现组件内冷却剂截面温差很大,无法满足组件设计要求的问题。本文采用计算流体力学(CFD)方法针对绕肋结构和组件围筒结构进行多方案论证,分析发现,燃料棒设置绕肋结构可在一定程度上减小组件截面温差,减小绕肋螺距可进一步减小组件截面温差,但并不能通过绕肋的搅混达到预期效果,无法满足组件设计要求。对燃料组件围筒设置塞条结构,可大幅减小组件截面温差,进一步对组件围筒采用倒圆角结构,可使组件截面温差满足设计要求。
- 行波堆 /
- CFD /
- 燃料组件 /
- 结构优化
Abstract: High temperature difference in travelling wave reactor bundle was found in the previous work. It could not be used in bundle design. Various analysis focused on helical wrapped wires and assembly housing was carried out by CFD calculation which found that the helical wrapped wires could influence the temperature differences while the effect was not obvious. Adding the strips and fillets on the assembly housing could optimize the thermal characteristics greatly, which can be used in the TWR assembly design.
- TWR /
- Computational Fluid Dynamics（CFD） /
- Bundles Assembly /
- Optimized design