对混合层流动进行了数值模拟。采用了离散涡方法。计算中采用扩散速度法处理粘性作用项。

The mixing layer flow was numerically simulated by the discrete vortex method, in which the diffusion velocity method was adopted to model the viscosity.

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以扩散限制凝聚模型(简称DLA模型)为代表的分形生长模型的出现，为研究粘性指进现象带来了新的生机。

The new life was bought to the viscous fingering research, due to the presentation of DLA (short for "Diffusion-Limited Aggregation") model, the type of fractal growth models.

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