Numerical study on rotordynamic coefficients of the seal of molten salt pump

作     者：Yao-Yu Hu De-Zhong Wang Yuan Fu Jun-Lian Yin 

作者机构：School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China Shanghai Institute of Applied Physics Shanghai 201800China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2016年第27卷第5期

页      面：168-178页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：funded by the National Natural Science Foundation of China(Nos.51576125 and 51406114) 

主　　题：动力特性系数 泵密封 熔盐泵 数值研究 转子动力特性 转子系统 整体流动 液体密封 

摘      要：Molten salt pump is applied to pump high-temperature molten salt as the primary coolant of a molten salt *** pump,generally a vertical rotor system,suffers from radial force generated by the liquid seal component,and the rotordynamic characteristics of the pump are affected *** this paper,the rotordynamic coefficients of the tooth-on-stator liquid seal in molten salt pump are *** flow in the seal region is simulated using computational fluid dynamics *** of the inlet loss and the pre-swirl at the inlet region of the seal are *** coefficients of resistance and the wall parameters are obtained from the simulation results by data fitting *** rotordynamic coefficients are analyzed based on the bulk-flow model of liquid *** rotordynamic characteristics,with and without the liquid seal,of the objective molten salt pump are *** first critical speed of the rotor is found to *** analysis shows that the pump,being sensitive to unbalance force though,can operate safely under its design specifications.