排灌机械工程学报2018，Vol.36Issue(6)：479-487,9.DOI:10.3969/j.issn.1674-8530.17.0048
基于双向流固耦合的核主泵叶轮力学特性
Mechanical properties of nuclear reactor coolant pump impeller based on bidirectional fluid structure interaction
摘要
Abstract
Based on the bidirectional fluid structure interaction method,the flow field and the structural response of the impeller were solved.The mechanical properties of the impeller of the nuclear reactor coolant pump were studied.The stress and deformation distributions of the impeller,the leading and trailing of the blade,and the root of the blade under different flows were analyzed.The results show that the fluid structure interaction effect has some influence on the characteristics of the nuclear reactor coolant pump and the result is closer to the test value after coupling.With the increase of flow rate, the stress distribution uniformity of the front shroud decreases,and the maximum equivalent stress oc-curs at the trailing edge of impeller blade and the frond shroud at the junction,where the fatigue load is liable to occur under the alternating load.The maximum deformation of the impeller occurs at the middle of the exit edge of the blade,which increases with flow rate.The stress concentration phenome-non appears easily at the leading and trailing of the blade root,which shows that the inlet and outlet of the blade are very sensitive to the pressure,load,static and dynamic interference of the fluid flow. Therefore,enough attention should be paid to these areas in impeller′s hydraulic and structural design. The results provide a useful reference for the performance analysis of the nuclear reactor coolant pump as well as the structural design,maintenance and overhaul of the impeller.关键词
核主泵/双向流固耦合/动应力/变形/数值模拟Key words
nuclear reactor coolant pump/bidirectional fluid structure interaction/dynamic stress/deformation/numerical simulation分类
机械制造引用本文复制引用
钟伟源,朱荣生,王秀礼,卢永刚,刘永,康俊鋆..基于双向流固耦合的核主泵叶轮力学特性[J].排灌机械工程学报,2018,36(6):479-487,9.基金项目
国家自然科学基金资助项目(51379091,51509112) （51379091,51509112）
江苏省重点研发计划项目(BE2016160) （BE2016160）
江苏省产学研前瞻性联合研究项目(BY2016072-02) （BY2016072-02）
江苏省自然科学基金项目(BK20130516) （BK20130516）
江苏省普通高校研究生科研创新计划项目(KYLX160894) （KYLX160894）
