摘要
为了揭示流固耦合作用对多相混输泵的影响规律,以一单级多相混输泵为研究对象,选取气液两相作为运输介质,基于ANSYS软件进行数值计算,流体域采用TurboGrid进行结构化网格划分。通过计算得到不同含气率下叶片表面的应力和应变分布规律。结果表明:在不同含气率下,动叶轮内最大变形量均出现在流向系数为0.1附近,而静叶轮内变形最明显的位置位于叶片的进口与出口处;随着含气率的增加静叶轮内叶片的变形量有一定程度的下降,但降低的程度要低于动叶轮内叶片的变化量。在动叶轮内,随着含气率的增加压力面和吸力面等效应力整体减小,且最大等效应力区域逐渐向叶轮进口方向移动。研究结果可为多相混输泵的开发与结构优化提供参考。
In order to study the effect of fluid-solid coupling on multiphase pump,a single stage multiphase pump was used as the research object.Gas-liquid two phases are selected as transportation medium.ANSYS software is used for the numerical calculation,and the fluid domain is divided into structured grids using TurboGrid.The stress and strain distributions on the blade surface were analyzed under the different gas volume fraction by numerical calculation.The results show that the maximum stress in the impeller is mainly appears near the streamwise distance of 0.1,but the maximum deformation is mainly concentrated at the inlet and outlet of the diffuser.With the increase of the gas volume fraction,the deformation of the diffuser decreases to some extent,but the reduction is lower than the change of the impeller.In the impeller,the equivalent stress of pressure surface and suction surface decreases and the maximum equivalent stress area gradually moves towards the inlet with the increase of the gas volume fraction.The research results can provide reference for the development and structure optimization of multiphase pump.
作者
姚显彤
史广泰
刘宗库
王彬鑫
YAO Xian-tong;SHI Guang-tai;LIU Zong-ku;WANG Bin-xin(School of Energy and Power Engineering,Xihua University,Chengdu,China,610039)
出处
《热能动力工程》
CAS
CSCD
北大核心
2020年第8期45-53,共9页
Journal of Engineering for Thermal Energy and Power
基金
国家重点研发计划(2018YFB0905200)
2018年研究生创新基金(ycjj2018036)
中国博士后科学基金(2017T100077)
中国博士后科学基金面上资助(2016M600090)
四川省教育厅科研项目资助(重点项目)(17ZA0366)。
关键词
流固耦合
多相混输泵
含气率
数值计算
应力应变
fluid-solid coupling
multiphase pump
gas volume fraction
numerical calculation
stress and strain
