MSR局部结构的流固耦合有限元分析  

Finite-element Analysis of Fluid-structure Interaction in Local Structure of MSR

作　　者：李鸿翔[1] 陈国清[1] 王惠敏[1] 周文龙[1] 

机构地区：[1]大连理工大学材料学院,大连116085

出　　处：《汽轮机技术》2015年第2期108-110,127,共4页Turbine Technology

基　　金：中央高校基本科研业务费专项资金(DUT14YQ105);新世纪优秀人才支持计划资助(NCET-10-0278)

摘　　要：基于汽水分离再热器(MSR)局部减薄失效问题,采用ANSYS Workbench有限元分析软件建立流固耦合有限元模型,研究工况中MSR的流体流场和壳体应力分布,探讨补焊对MSR局部结构的影响。模拟结果显示,补焊前的残余应力分布情况与实际减薄情况相符;补焊后MSR局部结构的残余应力分布更加均匀。The effect of local structural changes of Moisture Separator Reheater on stress distribution was studied by using the numerical simulation. The finite element models was established based on the commercial software ANSYS Workbench.Considering the fluid-solid coupling,the fluid velocity and pressure distribution of flow field and residual stress distribution of case was analyzed. The results demonstrated that residual stress distributed more evenly after local structure changes;before structural changes,the residual stress distribution is consistent with the actual situation of thickness changes.

关 键 词：汽水分离再热器 流固耦合 残余应力 

分 类 号：TK05[动力工程及工程热物理]