Influence of the Impeller/Guide Vane Clearance Ratio on the Performances of a Nuclear Reactor Coolant Pump  

作　　者：Xiaorui Cheng Xiang Liu Boru Lv 

机构地区：[1]Lanzhou University of Technology,College of Energy and Power Engineering,Lanzhou,730050,China [2]Key Laboratory of Fluid Machinery and Systems of Gansu Province,Lanzhou,730050,China

出　　处：《Fluid Dynamics & Materials Processing》2022年第1期93-107,共15页流体力学与材料加工（英文）

基　　金：This work is supported by the National Natural Science Foundation of China(No.51469013).

摘　　要：An AP1000 nuclear reactor coolant pump is considered to assess the influence of the Impeller/Guide vane clearance on the performances of this type of pumps.Experiments and numerical simulations relying on an unidirectional fluid-solid coupling approach are used to investigate the problem(stress,strain and mode of the rotor).The results reveal the relationship existing between the hydraulic performance of the nuclear reactor coolant pump and the clearance ratio.The effect of clearance ratio on the maximum equivalent stress on the back surface of the impeller blade is greater than that on the working surface(the maximum equivalent stress on the back surface of impeller blade is about three times that on the working surface).The clearance ratio has a scarce effect on the first six natural frequencies of the rotor of the nuclear reactor coolant pump.The related vibrational modes have different waveforms.

关 键 词：Nuclear reactor coolant pump clearance ratio fluid-solid coupling stress and strain numerical calculation 

分 类 号：O57[理学—粒子物理与原子核物理]