The dynamical basis of vortex motion solution is the set of equations of turbulent velocity fluctuation.
求涡旋运动解的动力学的基础是湍流速度涨落方程。
One-dimensional probability densities for oceanic turbulent velocity fluctuations and comparison with the Gauss distribution are given.
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。
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。
Mean velocity profile, turbulence intensity profile, integral scale and wind spectra are the most fundamental characteristics that describe the atmospheric turbulent boundary layer flow.
平均速度剖面,湍流度剖面,积分尺度和风谱是反映大气湍流边界层流动的四个最基本的因素。
Threaded seat rings for valves in services with high velocity turbulent flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.
如果阀门用在高速流体(湍流)或热循环应用环境中,则螺纹阀座环应该锁焊到阀体上,避免松落。请在订购时加以指定说明。
The decay laws of the normalized maximum perturbations in the mean velocity and turbulent intensity in the wake and the wake structure are discussed.
对山体尾流中最大平均速度扰动和湍流强度扰动的衰减规律以及山体尾流结构进行了分析。
Investigation reveals that smoke particles kinestate is decided mainly by the relative velocity between smoke cloud and particles and the smoke cloud turbulent intensity.
研究认为,烟幕微粒的运动状态主要决定于烟幕云团与微粒的相对速度和湍流强度。
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.
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。
Turbulent characteristics of different frequency band in constant volume combustion bomb can be realized by changing the structure of the perforated plate and the velocity of driving motor.
利用孔板平动法生成湍流,通过调节平板孔径的大小和驱动电机的转速来达到在定容燃烧弹内生成不同频段湍流特性的目的。
Based on the distribution of instant velocity, fluctuating velocity and average velocity, the flow status of turbulent flow is analyzed.
从瞬时速度、脉动速度和平均速度分布等方面对湍流流动进行了分析。
According to the approximation of the velocity profile of turbulent flow in cylindrical pipes, flow rate measurement based upon the maximum velocity of circular cross-section is proposed.
根据已知圆管紊流流速分布的近似模地,研究了使用管道轴线处的最大流速测量流量的方法。
The scaling of the longitudinal and transverse velocity structure functions is studied experimentally for turbulent jet and cylindrical wake flow.
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。
Two-phase velocity fields in a round turbulent jet with Reynolds number 8500 were measured by phase Doppler Particle Analyzer (PDPA).
采用相多普勒颗粒分析仪(PDPA)测量了雷诺数为8500的两相圆湍射流速度场,研究了两种大粒径颗粒对湍流的调制作用。
The results showed that the turbulence intensity and turbulent energy of the two-phase flow increased while the transverse velocity decreased in the presence of the temperature difference.
分析已有实验数据表明:在温度场存在的气粒两相流中,两相流场的湍流强度和湍动能将会增加而横向速度将会减小。
Velocity field inside the greenhouse is studied by numerical simulation theory of 3d turbulent model of CFD.
本文采用流体动力学三维紊流模型对大棚内部流场进行数值模拟。
A pulsed wire velocity probe is developed, and it's structure and characteristics studied. An example for measurement of Reynolds stresses in highly turbulent flows is given.
本文研制了脉冲热线空间速度探针,对其空间结构及特性进行了分析,给出了测量雷诺应力的方法与应用实例。
Turbulent intensity, pressure and velocity along with the flow direction were investigated.
考察湍流强度、压力和流速沿流动方向的变化情况及流场分布情况。
The scouring mechanism of each pattern is probed in the light of turbulent boundary layer and velocity of mass transport.
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 research about the bend-flow includes velocity, the distribution of velocity, slope, the distribution of flow, circumfluence of flow and the characteristic of turbulent.
弯曲型河流的水流运动研究包括流速及流速分布、比降、流场分布、环流运动、紊动特性等。
Effects of turbulent gas velocity, particle flux and baffles on them were examined.
考察了搅动气体流速、物流通量及塔板构件等因素的影响规律。
Threaded seat rings should be lock welded to the body when used in high velocity (turbulent) or thermal cycling services to avoid loosening. Please specify.
当用于高速流体(湍流)或热循环应用时,为了避免松开,螺纹阀座环应该锁焊在阀体上。请在订购时加以指定说明。
Two data processing methods, one analogue method and the other digital, were employed in order to obtain the profiles of mean velocity and turbulent intensity.
通过模拟法和数字法处理数据,得到了迴流区的平均速度和湍流度分布,还从数字数据处理器得到了速度概率分布和概率密度函数。
Three dimensional velocity and turbulent kinetic energy were gotten.
得到了三维速度以及湍动能。
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.
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。
Because of the effect of turbulent flow near the wellbore zone, Darcy's law for the plane radial flow can't completely apply to the oil Wells of high velocity turbulent flow.
对于具有高速流动的油井,由于在井底附近地带存在湍流的影响,达西定律的平面径向流动已不完全适用。
Results as the velocity shear increases to a certain extent, the small scale disturbances will exhibit chaotic behavior, which leads to the production of turbulent spots in local high shear regions.
结果在速度剪切度增大到一定程度时,将会出现小尺度扰动的混沌行为,它导致局部高剪切区中湍斑的产生。
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.
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。
It can make full use of favourable ignition conditions such as high temperatures in reflow region and low velocity as well as high turbulent scale.
同时利用了回流区内高温、低速、高湍流度等有利于着火的条件的新型煤粉稳燃器。
By the indoor flume model experiment, the changing law of vertical velocity distribution and turbulent intensity of submerged vegetation channel linings are discussed.
通过室内水槽模型试验,探讨了有低矮植被生长的河道糙率变化、时均流速的垂线分布以及紊动强度的垂向变化规律。
Distribution of flow vector, fluctuating velocity, turbulent kinetic energy, turbulent intensity and particle concentration were discussed.
本文对流场、脉动速度、颗粒浓度、湍动能、湍流强度等的分布做了讨论。
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