从边界层动态微分方程出发，按照速度边界层有关理论，推导出了边界层动态积分方程。
Based on the dynamical differential equations for the velocity boundary layer, dynamic integrate equation is drawn.
对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。
Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.
结果表明，对于收扩喷管，虽然其速度边界层厚度明显大于收敛喷管，但加装小突片结构也能够明显的强化射流的混合。
It was found that the tabs fixed on C-D nozzles also enhanced the jet mixing distinctly, although the boundary layers of the jets from C-D nozzles were greater than that from the convergent nozzle.
采用动量积分方法推出了管道流动中的速度边界层方程，给出了管道层流和紊流时速度边界层和核心区中的速度分布、边界层厚度的解析结果，并与冯。
The analysis result of velocity distribution and boundary layer thickness is put forward in the boundary layer and cored region for laminar and turbulent flow of pipeline.
实验证明通过改变叶片型线参数方程中的速度系数的取值，可以控制边界层的分离，进而改善泵的性能，提高其水力效率。
The experiment shows that by changing the velocity coefficient , the separation of boundary layer on pump vane can be controlled, and the performance of pump is improved and its hydraulic efficiency.
本文将其应用到水力学问题中，分析了紊流边界层，明渠水流等问题的速度分布规律，得到了与前人一致的结果。
In the paper, the authors use it to study the hydraulic problem, for example, to analyze the laws of the velocity distribution of turbulent boundary layer, open-channel water flow, etc.
这说明，在没有水动力学不稳定发生的情况下，柔性壁会使湍流边界层中速度型的对数区上移。
The results indicate that coating a compliant wall makes the logarithmic region of a turbulent boundary layer shift upwards as unstable hydrodynamic waves are absent.
并从紊流边界层及传质速度出发，探讨了三种冲刷形态的冲刷机理。
The scouring mechanism of each pattern is probed in the light of turbulent boundary layer and velocity of mass transport.
圆柱尾迹与边界层相互作用，改变了近壁区域多尺度相干结构的平均演化过程，也即速度的变化过程。
The conditional average phases of the multi-scale coherent eddy structures in the logarithmic area are changed by the cylinder wakes, which means that the variety of the velocity is changed.
结果表明：下垫面温度突变引起的温度内边界层与下垫面粗糙度突变引起的速度内边界层具有明显的差异。
The results show that significant differences exist between the velocity IBL caused by the abrupt change of surface roughness and temperature IBL caused by the abrupt change of surface temperature.
用流向速度分量信号的多尺度子波系数作为特征量检测平板湍流边界层多尺度相干结构。
The multi-scale coherent eddy structure in turbulent boundary layer is detected through taking multi-scale wavelet coefficient of stream velocity component signal as characteristic quantity.
另者，孤立波的边界层速度于浅化过程中正向与负向的极值速度有逐渐增加的趋势产生。
The maximum value of positive and negative horizontal velocity increases gradually with the decrease of the water depth in the shoaling process.
继而分析了在边界层中脱离壁面的汽泡上的作用力，导出了汽泡运动相对速度的计算公式及汽泡走向管子轴心的速度的计算公式。
The forces acting on the departing bubble are also analysed. and the formulas for calculating the relative velocity and the velocity with which the bubble moves to the tube axis are obtained.
对背景湍流度很大的流动，边界层中有时会产生沿展向周期分布的流向速度的条纹结构。
For high levels of free-stream turbulence, streaky structures in boundary layer with the spanwise variations alternating will be generated.
还求出了这二种层结下边界层顶抽吸速度的解析表达及其与某些参数的关系。
Furthermore, the analytic expressions for the pumping velocity at the top of the PBL and their relations to some parameters are also derived.
在大气边界层风洞中，利用粒子图像速度场仪(PIV)对风绕过二维温室的流动进行了流场测量。
Particle Image Velocimetry (PIV) Measurements were carried out on a 2-d flow field around the greenhouse in the atmospheric boundary layer wind tunnel.
在对边界层速度合理假设的基础上，求解了动态积分方程，给出了依时间和空间变化的边界层厚度响应函数。
The dynamical respondent functions dependent of the time and the space for the velocity boundary layer are different from the classical results.
该模型考虑了气、液膜之间的质量连续及能量连续特征。 对于不同的壁面过冷度，用数值方法首次求解并分析了边界层内局部不凝气体质量分数、温度和速度的分布规律。
The vapor liquid two boundary layer model is applied to predict local mass concentration of the non condensable gas, temperature profiles and velocity profiles in the boundary layer.
继而分析了在边界层中脱离壁面的汽泡上的作用力，导出了汽泡运动相对速度的计算公式及汽泡走向管子轴心的速度的计算公式。
The forces acting on the departing bubble are also analysed. and the formulas for calculating the relative velocity and the velocity with which the bubble moves to the tube axis are o...
继而分析了在边界层中脱离壁面的汽泡上的作用力，导出了汽泡运动相对速度的计算公式及汽泡走向管子轴心的速度的计算公式。
The forces acting on the departing bubble are also analysed. and the formulas for calculating the relative velocity and the velocity with which the bubble moves to the tube axis are o...
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