用一个体积分数F来定义流体区域，并用它来跟踪自由界面的运动。

A volume fraction specification, f, is used to define fluid region, and to track the movement of free boundaries.

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采用双流体数学模型通过数值模拟发现：在层流条件下，双流体模型能够很好地模拟颗粒相体积分数、管径和R e对相变区间的影响。

In this paper, the Euler-Euler model was used to numerically analyze the influences of the particle volume fraction, the diameter of tube and the Reynolds number on the phase-change region.

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结果表明：金属流体的浸渗充型随着纤维体积分数的增大，从非均衡浸渗向均衡浸渗变化。

The results show that with the increase of fiber volume fraction, the unhomogeneous infiltration of liquid metal changes into homogeneous one.

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