Numerical Research on Complex Convection in the Fuel Transfer Channel

An investigation is made on the thermal transfer characteristic of horizontal convection in the fuel transfer channel. The convection is a complex 3-D flow. Influencing factors on the convection are calculated and compared, such as the stuck position of fuel assembly, the diameter of channel, and the mechanical structure of the fuel transfer system. An optimized mechanical design for fuel transfer system is suggested. It seems effectively improved cooling effect by numerical simulation validation.