球的表面流动的空气形成湍流，这使得球的阻力相对较低。
The flow of air over the surface of the ball was turbulent, which gave the ball a relatively low amount of drag.
这与球体绕流(即绕球体的流动)的湍流转捩及分离流现象有关。
The ball and the flow around namely the flow around the sphere of turbulent flow and unprecedented turn phenomena.
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。
Mean velocity profile, turbulence intensity profile, integral scale and wind spectra are the most fundamental characteristics that describe the atmospheric turbulent boundary layer flow.
二是对排气管的二维不稳定湍流流动进行了计算和实验研究。
The other is about the calculation and experiment of the two-dimensional unsteady turbulent flow in an exhaust manifold.
本文提出了气固两相流动的湍流扩散数学模型。
A numerical model for turbulent fluctuation and diffusion of gas-particle flows is presented.
在导翼中自由振荡的球有利于全流道流动，最大限度减小湍流和振荡。
Free oscillation of ball in guide ribs facilitates full port flow with minimum turbulence and chatter.
给出搅拌槽内速度分布和湍流动能分布图。
The distributions of velocity vectors and turbulence kinetic energy are given.
这种模型对雷诺应力进行直接的模拟，并可模拟湍流流动的多重尺度影响。
This model focuses on the direct modeling of Reynolds stresses and utilizes split-spectrum concepts to model multiple-scale effects in turbulence.
基于湍流动能倾向方程，推导出了其只含风切变和大气稳定度的简化方程。
Based on the tendency equation of turbulent kinetic energy, its simplified equation including only wind shear and air stability was derived.
采用湍流动能收支参数化风应力产生的垂直混合(夹卷)，其中考虑了盐度对层结强度的影响。
A turbulent kinetic energy budget is used to parameterize the wind stress-induced vertical mixing (entrainment), in which the effect of salt on stratification intensity is considered.
多相流动动力学3：湍流，气体吸收和释放，柴油性能。
Multiphase Flow Dynamics 3: Turbulence, Gas Absorption and Release, Diesel Fuel Properties.
首先，在冷态流动中完成了利用网格湍流控制射流剪切层的实验研究。
First of all, control of the shear layer of jets by grid turbulence was studied for isothermal flows.
论述了浮选槽的结构特征以及浮选槽中浆流速度、湍流强度和流动方向等特征对浮选脱墨流体动力学的影响。
The effects of flow velocity, turbulence level and flow direction in the cell on hydrodynamics of flotation deinking were also discussed in this paper.
采用IFA300恒温式热线风速仪对换热器热气通道内的湍流流动进行了测试研究。
IFA300 isothermal HWFA is used to measure and study the turbulent flow in hot air channels of a heat exchanger.
采用高精度数值分析格式，对二维轴对称、粘性、湍流流动方程进行研究。
A high accuracy numeric analysis scheme is adopted to survey the two dimension axisymmetric, viscose, turbulent flow equations.
本文应用计算流体力学的理论和方法模拟了带内热源的三维空调房间室内气流的湍流流动。
This paper is an application of Computational Fluid Dynamics in the turbulent flow of a three-dimensional air-conditioned room in which there are heat sources.
用三维数值模拟的方法研究了不同涡流比下直喷式柴油机缸内湍流流动的规律。
The turbulent flow characteristics in cylinders of direct injection diesel engine under different air swirl ratios are analyzed by multi dimensional simulation methods.
气固两相射流具有高的颗粒温度，呈现强烈的气固两相湍流流动特性。
High granular temperature of particles appeared the intensity turbulence of gas-solid jetting flow.
用激光测速方法研究圆管流动的湍流间歇现象。
The turbulence intermitency in pipe transition flow is investigated experimentally by using laser Doppler velocimetry.
数值模拟碳氢富燃燃气与空气二维超声速剪切流动的湍流燃烧。
A turbulent combustion of hydrocarbon fuel-rich gas with air two-dimensional supersonic shear flow was numerically simulated.
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.
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。
Since turbulence effect appears near wellbore in oil well with high-speed flow, Darcy's Law for flat radial flow is incompletely applicable.
计算获得了分离流、二次流和多尺度旋涡结构，表明SST模型能很好地预测尾水管内的湍流流动。
Finally, separation flow, secondary flow and multi-scale eddy structure are simulated, it indicates that SST model can give a good prediction of turbulence in the draft tube.
本文采用直接数值模拟的方法对弯槽湍流进行了研究，主要目的是研究流向曲率对湍流流动情况的影响。
In this paper a turbulent curved channel flow was studied with the direct numerical simulation. The main objective way to investigate the influence of curvature on the turbulence.
由于气体的高速流动，产生了湍流效应，而湍流效应的存在，又影响了储层的渗流特性。
High velocity gas flow causes turbulence coefficient, while the existence of turbulence effect affects percolation flow characteristics of a reservoir.
文中还对湍流热量交换系数、湍流动量交换系数与理查孙数的日变化关系进行了讨论。
Finally, the relationship between the turbulent heat and momentum exchange coefficient and the diurnal variation of the Richardson number is discussed.
为了认识湍流怒细粉碎机粉碎腔内的流场结构和流动状态，文中以湍流超细粉碎机的实验设备为基础。
In order to improve the processing results of superfine comminuting mill with turbulence, it necessary to cognize the flow field frame and flow state in the concave.
为了获得流体在SK型静态混合器中湍流流动时的流动阻力规律，提出一种新的流体阻力的计算模型。
In order to acquire turbulent flow resistance rule in SK static mixer, a new numerical model of fluid resistance was put forward.
地铁站台的气流流动属湍流流动，采用CFD对站台通风方式进行模拟时需要确定相关的边界条件和适用的湍流模型。
Airflow in underground railway station platforms is turbulent. Boundary conditions and proper turbulence model are required to determine when adopting CFD to simulate platform ventilation.
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。
Based on the distribution of instant velocity, fluctuating velocity and average velocity, the flow status of turbulent flow is analyzed.
应用推荐