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A High Accuracy Compact Difference on Non-uniform Grid for 2D Convection Diffusion Reaction Equation

机译:二维对流扩散反应方程的非均匀网格上的高精度紧致差分

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By use of the method of dimension reduction, the two-dimensional convection diffusion reaction equation is firstly divided into the sum of two one-dimensional convection diffusion reaction equations. Based on the Taylor progression on non-uniform grid, a high accuracy compact difference for one-dimensional convection diffusion reaction equation is proposed. Finally, we combine the two compact differences for one-dimensional convection diffusion reaction equation to get the high accuracy compact difference for two-dimensional convection diffusion reaction equation. The numerical experiment shows that the present scheme are much more accuracy than that in uniform grid with the same number of grid points.
机译:利用降维方法,首先将二维对流扩散反应方程式分解为两个一维对流扩散反应方程式的总和。基于非均匀网格上的泰勒级数,提出了一维对流扩散反应方程的高精度紧致差分。最后,我们将一维对流扩散反应方程的两个紧致差组合起来,得到了二维对流扩散反应方程的高精度紧致差。数值实验表明,与具有相同网格点数的均匀网格相比,该方案具有更高的精度。

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