流体质点

基于气体球面向心稳定渗流理论、多孔介质中流体质点运动规律以及拟压力函数，建立了水锥形状与时间的关系模型、水锥突破时间公式及产量公式。

Based on the theory of gas sphere endocentric flow , the law of fluid particle motion in porous medium , and the relationship of pseudo pressure between pressure and pressure square , this paper give the function of water shape and time .

发现弯曲急流控制参数为定常时，流体质点的运动为规则的周期运动；

It was found that the fluid particles ' motions were regular and periodic with steady control parameters of the meandering jet .

通过摄像法得出了旋涡表面流体质点的运动轨迹、切向和轴向时均速度。

Moving path lines , tangential and axial average velocities of particles at the vortex surface are obtained by the photography method .

利用运动学模型，研究了弯曲急流控制参数为定常和发生周期扰动时的流体质点运动轨迹以及混沌现象的产生机制。

Particles trajectories in the two cases that the control parameters of the meandering jet were steady and changed periodically were studied .

将流体质点复杂的运动分解成轴面运动和环面运动，导出了轴面流线通用方程。

The complicated particle movement is decomposed into a meridional component and a torus component . A universal meridional streamline equation is derived .

如果雷诺数很大，由于流体质点变成杂乱无章的运动流动不再是层流。

If the Reynolds number is large the flow is no longer laminar as the particles tend to move in a random manner .

本文论述了利用激光技术测量流体质点运动速度的基本原理，并设计了一种多光轴系统，用以检测质点的二维运动状态，以便研究二维流场的速度分布。

The treatise expounds a system of laser , it is used for check about particle motion state and velocity distribution of two dimensional flow .

基于多孔介质流体质点的渗流规律，对具有近似直线供给边界的边水气藏见水时间的预测方法进行研究。

Based on the theory of mass point percolation flow through porous media , water breakthrough time is predicted for gas reservoirs with approximately straight line feeding edge water .

射流泵是以液体射流作为工作介质，通过流体质点或微团的紊动扩散作用，把能量传给被抽流体的一种流体机械及混合反应设备。

Jet pump is a kind of fluid machinery and mix reaction equipment with fluid jet as working medium , which transfers energy to suction fluid through turbulent diffusion of fluid particle .

激光多普勒测速系统是用一束单色激光照射到流体中的杂质质点上，测出其散射光的多普勒频移，然后换算成流体的速度。

The Laser Doppler Velocimeter ( LDV ) system determines the flow velocity by measuring the Doppler frequency shift in light scattered from contaminants in a fluid illuminated by a monochromatic laser feam .