各测点流速脉动过程实测资料表明，各测点流速的脉动过程线基本类似，并具有大小不同的准周期。
The velocity pulsing process observation data of all the measuring points indicate that the velocity pulsing process of all the measuring points is almost similar and have different quasi-periodic.
脉动流速数据的采集到应用，由于各种干扰因素的存在，一般都需要将测量数据进行预处理。
Generally, fluctuating velocity data should be disposed for it was disturbed by a lot of factors during data acquisition.
因为压力脉动减小导致流速增加，从而使冲击噪声和涡流噪声略有增加。
Because velocity of flow reduces when the pressure pulse reduces, the noise of impulsion and the noise of vortex increase a little.
结果表明，无论从微观结构，还是外在特征，挟沙水流速度脉动与浓度脉动之间存在着内在联系。
It has proved that the turbulence of the flow resulting in the sediment suspension and the fluctuation of the concentration of sediment.
在主流速度脉动能谱中，低频运动强度大于水流，而高频运动强度低于水流。
In the power spectrum of the streamwise velocity fluctuation, the power intensity at low frequencies was larger and the power intensity at high frequencies was smaller than that for water.
本文叙述了电化学法测量的原理，介绍了用一半圆电极对同时测量壁面上二维湍流速度梯度脉动的方法和测量结果。
This paper describes the principle of such a measurement, and a semicircular electrode pair is suggested for the measuring of the two dimensional fluctuations of velocity gradient on the wall.
对海洋湍流速度脉动的一维概率密度作了测量，并把测量结果与高斯分布进行了比较。
One-dimensional probability densities for oceanic turbulent velocity fluctuations and comparison with the Gauss distribution are given.
实验测量了射流与圆柱尾流纵、横向的湍流速度脉动，计算了这两种方向的湍流速度结构函数的标度规律。
The scaling of the longitudinal and transverse velocity structure functions is studied experimentally for turbulent jet and cylindrical wake flow.
表达式显示出的扩散系数随垂向脉动流速均方根值和颗粒粒径、密度而变化的趋势与实验结果吻合。
Results of homogeneous turbulence experiments show that the diffusion coefficient varies with the size and density of sediment particles, just as indicated by the theoretical analysis.
此方程将脉动流速分解为三个组成部分，并且据此导出脉动应力分解方程。
According to the above work, the Renolds-stress is resolved into serval parts, and the composed equation of Renolds-stress is derived.
试验还利用荧光粒子进行了阀隙流场测量，得到了层次清晰的抛物线状阀隙流速分布和阀隙区域的速度脉动分布。
With the results, the general features of the flow are analyzed and summarized from the perspectives of velocity profiles, vorticity distributions and trend charts of velocity.
采用多谱勒三相流速仪，在长江干流黄陵庙水文观测断面进行脉动流速观测，获得了不同流量级、不同垂线的脉动流速资料。
Field experiments on fluctuation velocities were carried out at the section Huanglingmiao of stem stream of Yangtze River with an Acoustic Doppler Current Profile (ADCP).
用这些公式和一台一维激光多普勒测速计，测量了方形管道中水流的二维湍流速度脉动的均方值和雷诺切应力。
Using these formulas and a 1-d LDA, mean square value of 2-d turbulent velocity fluctuation and Reynolds shear stress have been measured for water flow in a square duct.
用这些公式和一台一维激光多普勒测速计，测量了方形管道中水流的二维湍流速度脉动的均方值和雷诺切应力。
Using these formulas and a 1-d LDA, mean square value of 2-d turbulent velocity fluctuation and Reynolds shear stress have been measured for water flow in a square duct.
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