中文摘要：

板状燃料组件在先进核反应堆中得到了广泛应用。流体以一定流速轴向掠过平行板组件可能导致板的流致振动（FIV）,而板的振动又会影响流场的重新分布,两者之间构成强烈的流固耦合（FSI）关系。针对板状燃料组件的FIV现象开发了计算程序。程序基于物理组成贴体坐标系（PCBFC）,结合任意拉格朗日欧拉坐标法（ALE）实现网格的移动。本工作详细模拟了在窄通道中移动边界条件下流场的分布;数值求解板在流体压力下的梁式振动方程,从而实现窄流道中柔性单板流固耦合的数值模拟。

英文摘要：

The plate-type fuel assembly is widely used in the design of the advanced reactor. It may occur the flow-induced vibration （FIV） when the fluid flows over the fuel plate in axial direction. At the same time, the FIV also influences the distributions of the flow. It forms a strong fluid-structure interaction （FSI） between the plates and the fluid. The code developed in the research is for a single plate. It is based on physical component and body-fitted coordinate （PCBFC）, and applies arbitrary Lagrangian Eulerian （ALE） method to realize the grid moving. The distribution of the flow in the narrow channel was simulated. The numerical calculation was performed for the formula of beam vibration of the plate coupled with the pressure. This is a new method to simulate FSI for the flexible plate in a narrow flow channel.