第三，为了计算孔隙模型的微观波及效率，本文给出了驱替液波及边界的定义，并采用速度法确定其在流场中的位置。

Third, in order to calculate microscopic sweep efficiency in pore models, we define sweep boundary of displacement fluid, and determine it by velocity method.

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利用多分辨分析的数据压缩作用来提高能量法的效率，利用约束能量法来处理边界约束。

The data compression effect of multiresolution wavelet analysis can improve the efficiency of energy method, and energy method can deal with boundary constraints.

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边界单元法降低了求解空间的维数，减少了离散线性方程组的阶数，输入数据比较少，而工作效率高。

This method reduces the number of space dimension, makes the equation system lower order, less data input and higher efficiency .

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