中文摘要：

提出了一种以栅格法为基本方法,基于几何特征和物理场量双重自适应的六面体网格再生成方法。首先,依据旧网格的表面曲率和几何特征,采用基于栅格法的几何自适应网格再生成方法,生成密度受控的基础网格;然后,将旧网格的物理场量传递到基础网格中;最后,采用有限元误差估计方法对新网格单元的计算误差进行估计,对误差较大的单元进行加密,减少了有限元分析误差。网格再生成实例表明,该方法实用性强,效果良好。

英文摘要：

An adaptive remeshing method with grid-based approach for hexahedral element mesh is presented,which is based on the geometric features of old mesh model and the physical field variables distribution of new mesh model.First,using adaptive remeshing method of hexahedral element mesh with grid-based approach,the base mesh is generated,whose density is controlled by boundary curvature and geometry feature of the old mesh model.Second,physical field variables are transformed from the old mesh into the new mesh.Finally,to reduce the analytical error of finite element,with the error estimating method for FEM,the error of new mesh elements are estimated and the elements with large error are refined.The effectiveness and robustness of the algorithm are tested through the applications.