Development Of Numerical Simulation Software For The Flow-Structure Interaction Of The Plate Fuel Assembly In An Advanced Reactor

The plate-type fuel assembly has being widely used in the design of the advanced reactor. It may occur the vibration of the fuel plate of the assembly, i.e. flow-induced vibration, when the fluid flows over the fuel plate in axial direction. At the same time, the flow-induced vibration (FIV) also influences the distribution of the flow rate and the velocity. It forms a strong fluid-structure interaction (FSI) between the plates and the fluid. The kind of research is very important for the reactor safety. For single plate, this code, which is a 2-dimension numerical simulation software for the flow-structure interaction of plate-type fuel assembly in Advanced Reactor, is based on PCBFC, and use the finite difference method for the discretization of the N-S equation. The moving grid is realized by ALE-BFC. The pressure and the velocity after the movement of the grid are modified by the Lie derivative.