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网格变形是气动弹性计算中实现计算网格随运动边界变形的主要方法。在总结目前网格变形方法发展现状的基础上,对近几年常用的网格变形方法,即弹簧法、弹性体法、超限插值法、Delaunay背景网格法、径向基函数插值法和温度体法等做了简要的总结。根据各方法构建模型的不同,将它们分成物理模型法、数学插值法和混合方法 3类,简要介绍了各方法的基本思想和研究进展,重点比较了各方法的网格变形特性(变形能力、变形质量和变形效率)和优缺点。总结了当前流场边界与结构边界的数据传递方法,对当前气动弹性计算中遇到的网格变形的难点问题作了简要评述并对未来网格变形方法的发展方向进行了探讨。
Grid deformation is the main method of calculating the deformation of grid with moving boundary in aeroelastic calculation. On the basis of summarizing the current development of grid deformation methods, this paper analyzes the commonly used methods of grid deformation in recent years, namely spring method, elastomer method, overrun interpolation method, Delaunay background grid method, radial basis function interpolation method and Temperature body method made a brief summary. According to the difference of each method construction model, they are divided into three categories: physical model method, mathematical interpolation method and hybrid method. The basic idea and research progress of each method are briefly introduced. The deformation characteristics of the method (deformation ability, Deformation quality and deformation efficiency) and advantages and disadvantages. The data transfer methods of current flow field boundary and structure boundary are summarized. The difficulties of grid deformation encountered in current aeroelastic calculation are briefly reviewed and the future development of grid deformation method is discussed.