基于改进涡方法的膜结构流固耦合研究
Interaction between membrane structure and wind based on modified vortex method
Modified vortex method, which introduced the discontinuous boundary element method into the conventional vortex method, is employed to simulate the interaction between membrane structures and wind. Three-dimension viscosity and incompressible flow fields can be simulated more accurately via this method. The flow field pressures of all element node for membrane structure at every timestep is got by the modified vortex method, and combine with the entire stiffness matrix draw from finite element model to calculate the displacement of element nodes, and further gets the flow field at next timestep. The pre-conditioning GMRES(the generalized minimum residual) iterative algorithm is also imported into the present study, and takes full advantage of the boundary element method. The wind tunnel vibration experiments on square flat membrane structure is concluded. The mean value of displacement for interaction between membrane structure and wind, is calculated by modified vortex method, and are in good agreement with the results of wind tunnel testing. It also indicates the modified vortex method is a useful attempt at to simulate the process of interaction between membrane structure and wind.
膜结构 / 改进涡方法 / 流固耦合 / 数值模拟 / 气弹风洞试验 {{custom_keyword}} /
membrane structure / modified vortex method / fluid-structure interaction / numerical simulation / aeroelastic wind tunnel testing {{custom_keyword}} /
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