板状燃料元件堆芯流量分配及不对称冷却计算研究

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Investigation on Mass Flux Distribution and Asymmetrical Cooling in A Plate-Type Fuel Reactor

1. State Key Laboratory of Multi Phase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;
2. Department of Nuclear Engineering, Xi'an Jiaotong University, Xi'an, 710049, China

摘要: 通过选择合适的数学物理模型,应用Compaq Visual Fortran 6.0软件编制程序,对全堆芯流量分配和板状燃料元件的不对称冷却进行了耦合迭代求解。构造了3种流量分配和两种板状燃料元件不对称冷却的迭代方法,以一个组件为计算对象,对这几种方法作了计算对比。计算表明:堆芯结构和功率分布对流量分配都有影响,但是主要起作用的还是堆芯结构;不对称冷却将显著的影响到板状燃料元件的温度场和功率分配。
- 流量分配 /
- 板状燃料元件 /
- 不对称冷却
Abstract: A program was developed to calculate the mass flux distribution in the whole core and the asymmetrical cooling of fuel pins for a plate type fuel reactor by applying the proper physical model.Three iterative algorithms for mass flux distribution calculation and two iterative algorithms for temperature field calculation of plate fuel element under asymmetrical cooling condition were proposed and compared by applying in a subassembly.The results showed that the flow distribution is mainly determined by the core structure,although it is also impacted by the power distribution in the core.The asymmetrical cooling condition seriously impacts the temperature field and power distribution of the fuel pins.
- Mass flux distribution /
- Plate-type fuel /
- Asymmetrical cooling