速度分布

Velocity distribution of fluid in eccentric annuli with the inner cylinder reciprocating axially［J］.

流体在内管做轴向运动的偏心环空中的速度分布［J］。

Experimental investigation on strongly separated flow in an annular compressor cascade ;2. The structures of separated flow, especially, vortices, inside an annular compressor cascade at large incidences have been studied baized on the flow visualization images obtained by means of Laser-sheet method and 7-hole probe measurement.

本文采用激光片光层加示踪粒子流场显示技术，观察和摄取了环形压气机叶栅在约十14大攻角下的内部流动图像；采用七孔气动探针测量了叶栅出口截面上的速度分布S通过对流场实验结果的分析，并结合本文第一部分中得到的叶片近壁区分离流结构，得到了该环形压气机叶棚中严重分离流场的分离流形态和旋涡结构。

A high-speed camera is used to visualize the flow structures,and Laser Doppler Velocity is employed for velocity measurement.The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

Accordingly the whole understanding to the pressure and velocity state of flow field around high-speed train is comprehended.

从而得第 11页西南交通大学搏士研究生学位论文到列车外部流场中压力和速度分布状况的较为完整的认识，为列车的强度设计，列车周围设施的抗风设计以及路边作业人员的安全和行为规范的制定提供了一个可资参照的依据。

The calculation model of thin film evaporator was developed, the flow of water and viscous fluid was simulated using CFX 4.4 software and the velocity distribution was obtained.

建立了薄膜蒸发器的计算模型，采用大型计算流体力学分析软件CFX4.4模拟了薄膜蒸发器内水及粘性料液的流动过程，得到了各种速度分布。

PDA laser flow velocity testing technique was used to measure the flow velocity of solid particles in the solid-liquid-gas three-phase system in a flotation cell and obtained the velocity distribution of solid particles so as to provide reliable data for the study on adsorption and deadsoption mechanism of particles onto and off from bubbles.

采用PDA激光流速测试技术，在固-液-气三相体系中对浮选槽中固体颗粒进行了流速测定，获得了固体颗粒的速度分布，为矿粒与气泡粘附过程和脱附过程机理的研究提供可靠数据。

Separation occures in one of the two impellers according to the computing results.

文中给出了两种叶轮内部流场的压力、速度分布的计算结果，其中之一出现分离。

In this thesis, we put forward two mathematical optimum design systems for cascades, in which control parameters of blade mid-line or speed coefficient on blade suction side were selected as design variables respectively.

本文提出了两种叶栅数值优化设计系统，设计变量分别为控制叶型中弧线的一组参数和控制叶型吸力面速度分布的一组参数。

The properties of the shear layers are analyzed in the states of purely laminar, fully turbulent and laminar+transition+turbulent using the Thwaites Integral and Head Integral methods.

文中采用的数值求解过程为：首先求解给定翼型的位流速度分布，在此基础上采用Thwaites积分法和Head积分法，分别计算纯层流、纯湍流以及层流+转捩+湍流这三种流态的边界层，分析三种流态的边界层特性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷