对于不可压缩的流体来说，流管中的质量通量和体积通量都是恒定不变的。
For incompressible fluids, both the mass flux and the volume flux are constant in a tube of flow.
提出了一种新的适于不可压缩流动有限体积差分计算的多重网格法。
Proposed is a new multi grid scheme suitable for calculating incompressible flows in turbomachinery.
使用有限法求解不可压缩牛顿流体流动控制方程，用体积函数法跟踪金属液自由表面的移动，预测了机体充型过程的流动速度场和温度场。
The incompressible, Newtonian fluid flow equations are solved using finite element method. The free surface motion of molten metal is tracked by the volumetric function approach.
使用有限法求解不可压缩牛顿流体流动控制方程，用体积函数法跟踪金属液自由表面的移动，预测了机体充型过程的流动速度场和温度场。
The incompressible, Newtonian fluid flow equations are solved using finite element method. The free surface motion of molten metal is tracked by the volumetric function approach.
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