合理有效的界面信息传递方法是实现流固耦合(FSI)分析的关键环节,本文研究了流固耦合界面信息传递理论和方法.归纳了流固耦合界面信息传递所遵循的基本原理:运动学连续条件、动力学连续条件及能量原理等.将信息传递方法总结为局部插值法和整体插值法两大类.局部插值法中研究了映射点插值法、加权余量法、常体积转换法等方法,并给出了主单元及映射点搜寻算法;整体插值法研究了样条函数法、Shepard方法、径向基函数法.最后对瞬态问题给出了CSD、CFD间的时间插值模式.本文从理论和方法上为解决流固耦合界面数据传递问题提供了指导.
It is a key step to find a proper and effective data exchange approach for FSI analysis.The theory and method of data exchange on fluid-structure interaction is studied.The basic principle for data exchange is deduced including kinematics continuity condition,dynamics continuity condition and energy conservation.The data exchange methods can be classified into two main categories: local interpolation method and global interpolation method.Mapping point interpolation,weight residual method,Constant Volume Tetrahedron(CVT) are studied in local interpolation method.The search algorithm for host element and mapping point is also given.Splines method,Shepard method and radial based function(RBF) are studied in global interpolation method.The time interpolation modes between CSD、CFD for transient problems are also given.The paper can be a direction in theory and method of data exchange on coupling interface for FSI computation.