摘要
以某石化企业的丙烷球形储罐为研究对象,在ANSYS Workbench平台上充分考虑球罐的几何完整性和风载荷分布不均匀性,进行流固耦合计算分析。具体方法是先对球形储罐的外部空气流场进行三维数值模拟得到绕流流场分布,然后将流场计算结果加载到球形储罐外表面,进行结构静力学分析。结果表明:风在球形储罐附近发生绕流时,流速先增大后减小,并在球壳和支柱背风面形成漩涡,流动分离的位置随风速增大向后推迟;风流在球形储罐迎风面形成正压区,在非迎风面形成负压区,球壳迎风面风压呈同心圆环形对称分布,由中心向边缘风压逐渐减小;球形储罐在风载荷作用下的应力较设计工况下的显著增大,经应力线性化分析和强度校核,该球形储罐满足标准要求。
By taking the propane spherical storage tank of a petrochemical enterprise as the research object,this paper fully takes into consideration the geometric integrity of the tank and the unevenness of wind load distribution at the ANSYS Workbench platform to conduct a fluid-solid coupling analysis.Firstly,a three-dimension numerical simulation of the external air flow field of the tank is performed to obtain the flow field distribution of the surrounding flow.Then,the calculation results of the flow filed are loaded on the outer surface of the tank to perform a structural static analysis.The results indicate that(1)when the wind flows around the spherical storage tank,the velocity first increases and then decreases,forming several vortexes on the leeward side of the spherical shell and the pillar,and the position of flow separation is delayed as the wind speed increases;(2)the wind forms a positive pressure zone on the windward side of the spherical storage tank and a negative pressure zone on the non-windward side;(3)the wind pressure on the windward side of the spherical shell symmetrically distributes in concentric circles,and gradually decreases from the center to the edge;and(4)the stress of the spherical storage tank under wind load is significantly larger than that under the design conditions.According to the results of stress linearization analysis and strength check,there comes to the conclusion that the spherical storage tank meets the standard requirements well.
作者
黄思
张果冉
唐梓睿
欧晨希
林冠堂
HUANG Si;ZHANG Guoran;TANG Zirui;OU Chenxi;LIN Guantang(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;Zhuhai Branch,Guangdong Institute of Special Equipment Inspection and Research,Zhuhai 519002,Guangdong,China)
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第2期67-75,共9页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(21878102)。
关键词
球形储罐
风载荷
空气流场
数值模拟
流固耦合分析
spherical storage tank
wind load
air flow field
numerical simulation
fluid-solid coupling analysis
