抄録
Steam generator (SG) is a key equipment for the PWR system which play the role of energy exchanger hub for removing fission energy from the reactor safely. The operational status of the SG is related to the safety of the reactor. The structure of SG is extraordinary complex and the coolant flow state is also complicated which because the coolant in the primary side is forced convection but two phase flow in the secondary side. To deeply reveal the three-dimensional heat transfer characteristics of the whole SG, a three dimensional thermal hydraulic coupling method is established based on the porous media method and CFD software in this research. The geometry of the SG is simplified to some extent at the first step in this research which both sides of the tube bundle zone are considered as a unified volume based on the porous media method. The three dimensional energy coupling function between the primary and the secondary side is achieved through adding a functional user defined function to the simulation model. Finally the thermalhydraulic characteristics about the primary side and the secondary side are obtained respectively. The success of the coupling simulation about SG in this research can prove the feasibility of this method and can be a good foundation for the research on the thermal hydraulic characteristics about more complex SG prototype in Nuclear Power Plant (NPP).
