本文论述一个由流体力学和光学联系起来的新课题——激光通过湍流剪切层后的相位变化及峰值功率变化。
In this paper, the investigation of the variations of the peak power and phase Angle of a laser beam passing through a turbulent shear layer is discussed.
使用FLUENT软件，通过湍流模型和离散相模型对风机内部的二维流场和二维粒子运动轨迹进行了模拟。
Using the turbulence model and discrete phase model of FLUENT, the flow field and the track of the ash in the centrifugal blower was simulated.
采用积分变换技巧，推导出了环状光束通过湍流大气传输二阶矩束宽的解析表达式，并研究了湍流对环状光束扩展的影响。
The closed-form expression for the mean squared beam width of annular beams propagating through atmospheric turbulence is derived by using the integral transform technique.
空气的混合是通过依靠风的能量的湍流来实现的。
The air is mixed by means of turbulence that depends on the wind for its energy.
心脏杂音是血流从左心室到升主动脉通过狭窄的主动脉瓣口时产生的湍流引起的噪音。
A heart murmur is simply a noise caused by the turbulence of blood flowing through the obstruction from the right ventricle to the pulmonary artery.
通过采取增大压缩比、采用湍流型燃烧室的措施，可改善发动机的燃烧过程。
By means of increasing compress ratio and adopting a turbulent combustion chamber, the combustion process was improved.
通过水力学模型实验，研究了不同结构的湍流控制装置对中间包流体流动特性的影响。
The influence of turbulence inhibitors with different structure on fluid flow behavior in tundish was studied by water modeling experiments.
通过采用一组预置协方差的随机数模拟雷诺应力来表示随机的湍流流场。
The stochastic turbulent field is represented by a set of random Numbers with a pre - set covariance simulating the Reynolds stress in a turbulent flow.
通过改变燃气和空气进入燃烧室的速度和方向，改变燃烧室内的湍流场特性。
By changing the speed and direction of the gas and air entering the combustor, the character of the turbulent field in the combustor is changed.
通过模拟流场和试验流场的比较分析，对湍流模型进行了检验及验证。
By comparative analysis to the results of simulation and experiments, the turbulence model is tested and scientific validated.
在离子温度梯度模（ITG）湍流背景中，通过最小自由度模型中模耦合方式产生带状流，对此模型做了动力学稳定性分析及数值求解。
The energy cascade process in the ITG mode turbulence and the relationship between Reynolds stress and zonal flow are also discussed.
通过对喷流平均流及湍流脉动统计结果的对比，确定数值方法的精确性。
By comparing the statistical results of the mean flow and the turbulence fluctuation of the jet, we verify the accuracy of the numerical method.
通过改变燃烧室头部喷嘴、旋流器的数目和位置，对短环形流燃烧室内有较强回流的湍流旋流流动进行了模拟。
Turbulent reactive flow in a short annular combustor is simulated by changing the number and location of nozzle and swirler in combustor dome.
本文用数值模拟的方法研究了湍流对通过其后的部分相干平顶高斯光束的影响。
The influence of atmospheric turbulence on partially coherent flat-topped Gaussian beam is studied numerically in this paper.
通过考虑大气湍流的影响，对单光子捕获概率的表达式进行了修正。
Atmospheric turbulence is considered and the expressions of single - photon acquisition probability are modified.
本文以BL模型为例，通过可压缩湍流边界层的三个典型算例，与直接数值模拟(DNS)的结果作对比。
In this article, bl model is used to study three typical cases of compressible turbulent boundary layer, for which, data from direct numerical simulation (DNS) are available for comparison.
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。
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.
本研究为通过控制湍流拟序结构进而控制湍流提供了初步依据。
The current research provides the basis of investigating the control of turbulent shear flows through coherent structures.
通过测量近地面层不同高度处温度、湿度、压强和风速等常规气象参数，结合模型可给出近地面层大气湍流强度。
Through measuring meteorological parameters including temperature, humidity, pressure and wind speed, atmospheric turbulence strength in the surface layer can be obtained.
颗粒的湍流扩散是通过随机轨道模型来模拟的。
The Random Particle-Track model simulate the turbulent diffusion.
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。
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.
通过模拟湍流流动和湍流反应流，来加强对实验的指导。
With simulation of turbulent fluid field and reacting flows, We direct the experiments more efficiently and correctly.
在某些气体湍流缓慢的区域中，地球表面产生的烟雾很大一部分是通过分子扩散而消散的。
In certain locations where atmospheric turbulence is lacking, smoke originating at the surface of the earth is dissipated largely by molecular diffusion.
本文通过计算分析了旋转湍流边界层。
A method for analyzing the rotating turbulence boundary layer flow was presented.
从雷诺应力模型出发，通过求解雷诺平均N - S方程组获得三维湍流流场的数值解。
Based on the Reynolds Stress Model, the three-dimensional flow field was numerically simulated using the Reynolds averaged N-S system equations.
通过对适合安装于水平管道的特殊结构的金属管浮子流量计三维湍流流场的数值仿真及实验研究提出一种基于计算流体力学的流量传感器设计方法。
Based on the computational fluid dynamics, a design method for flow meter is given through numerical simulation and experiment on metal tube rotameter with special structure fixed on the level piping.
激光束通过有湍流的大气传输时，其强度、相位和方向都会受到扰动而出现相应的随机变化。
When laser beam transmit through air, the intention, phase and direction will be changed random for the disturb of over-fall.
文中介绍了激光信号通过随机大气信道时，大气湍流效应造成了光束抖动、强度起伏，光束扩展和像点抖动等现象。
In this paper the dithering of beam light, the undulating of beam intension, spread of the beam light and the dithering of image are introduced.
通过改进湍流模型和壁面边界，即用低雷诺数湍流模型结合混合壁面边界的处理方法解决了以上问题。
To solve the above problem, a low-Reynolds number turbulence model with a hybrid wall boundary treatment was adopted.
通过改进湍流模型和壁面边界，即用低雷诺数湍流模型结合混合壁面边界的处理方法解决了以上问题。
To solve the above problem, a low-Reynolds number turbulence model with a hybrid wall boundary treatment was adopted.
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