Using variation principle, the difference discrete scheme with diffusion flux form on the irregular hexahedral grid is constructed.
在非正规六面体网格上，用变分原理建立扩散流形式的差分格式。
In the article, the fully discrete finite difference scheme for a special nonlinear reaction-diffusion equation is established.
对一类特殊的非线性反应扩散方程进行完全离散，得到非线性的有限差分格式。
Discusses some properties of the second upwind difference scheme for the convection-diffusion equation and explains certain questions in the computation of natural convection problems.
讨论了对流扩散方程的第二逆风差分格式的一些性质，并说明了在自然对流计算中的某些问题。
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