摘要
本文应用一种基于调和映射的移动网格方法计算非定常渗流,该方法将偏微分方程求解与网格移动算法分开,且需要在新生成的网格上插值更新解.本文通过计算一个关于梯度的控制函数,使得网格加密与希疏化是随着水力梯度的变化自动实现的.从而提高整体解的精度.
This paper applies moving grid method based on harmonic maps to calculate unsteady seepage,which delinks the PDE solver and the mesh-moving algorithm and then requires interpolating the solution on the newly generated mesh.In this paper,it makes the mesh refined or coarsened self-fulfilling based on the change of hydraulic gradient by calculating a monitor function on gradient so as to enhance the accuracy of the solution.
出处
《南华大学学报(自然科学版)》
2010年第1期24-28,共5页
Journal of University of South China:Science and Technology
关键词
非定常渗流
有限元
移动网格方法
控制函数
unsteady seepage
finite element
moving mesh method
monitor function