论文部分内容阅读
基于弱耦合求解策略,利用ANSYS-CFX软件对核电常规岛主厂房钢框架结构与三维龙卷风场的流固耦合效应进行了CFD数值模拟,并就结构在龙卷风风场作用下的表面风压及位移响应进行了研究。研究结果表明:当龙卷风袭击结构时,屋顶及近涡旋中心侧面出现负压区,而最大正压出现在迎风面;结构的最大位移出现在结构迎风面的屋角处;单向流固耦合和双向流固耦合下两种情况下的位移相差较大,相对误差达到36%。因此,在结构的抗龙卷风设计中考虑结构与龙卷风场的耦合作用有一定的必要性。
Based on the weak coupling method, the CFD numerical simulation of the fluid-structure interaction between the steel frame structure and the three-dimensional tornado field of the conventional nuclear power plant in the nuclear power plant was conducted by ANSYS-CFX software. The wind pressure and displacement of the structure under the tornado wind field Response was studied. The results show that when the tornado strikes the structure, the negative pressure zone appears on the roof and near the center of the vortex, while the maximum positive pressure appears on the windward side. The maximum displacement of the structure appears on the windward side of the structure. The unidirectional fluid- And two-way fluid-structure interaction under the two cases of displacement greater difference, the relative error of 36%. Therefore, it is necessary to consider the coupling between structure and tornado in the structure design of anti-tornado.