“流体动力学基本方程”是将质量、动量和能量守恒定律用于流体运动所得到的联系流体速度、压力、密度和温度等物理量的关系式。对于系统和控制体都可以建立流体动力学基本方程。系统是确定不变的物质的组合;而控制体是相对于某一坐标系固定不变的空间体积,它的边界面称为控制面。流体动力学中讨论的基本方程多数是对控制体建立的。
应用粘性流体动力学基本方程,分析了聚合物物料在螺槽中的流动。
The flow of rubber compound in the screw channel was analyzed with the basic equation of the viscous fluid kinetics.
由流动的连续性引进了流函数,使流体动力学基本方程的未知量的个数减少一个;
Because of the continuity of the flow, the stream function is introduced and it makes that the numbers of the fluid dynamical basic equation is cut off one.
基于两相流体动力学的理论,建立空蚀射流切割装置中短管内的压力变化梯度的基本方程式;
Based on the theory of two-phase flow, the equation of the pressure gradient is found for the short pipe in cavitation jet cutting set.
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