助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   紊流动能 的翻译结果: 查询用时:0.031秒
图标索引 在分类学科中查询
所有学科
水利水电工程
建筑科学与工程
地球物理学
更多类别查询

图标索引 历史查询
 

紊流动能
相关语句
  turbulent kinetic energy
     Based on the characteristics of the flocculation tank an analysis of the influence of the turbulent kinetic energy on flocculation is carried out The conclusion indicates that the optimum value of A1/A2 is from 1. 2 to 1. 5, where A1 is the area in the current s corner and A2 is the area in the current s passage.
     结果表明絮凝池转弯处过水断面面积A1与廊道过水断面面积A2的比值A=A1/A2,这一影响流场紊流动能的设计参数的最佳范围是1.2~ 1.5。
     Starting from the fundamental equations for viscous flow, and using gene-ralized tensor form, this paper strictly derives the exact transport eqtations ofthe Reynolds stress, and of the turbulent kinetic energy as well as of the rateof turbulent kinetic energy dissipation for three-dimensional incompressible steadyflows in general rotating and non-orthogonal curvilinear coordinate systems.
     本文从粘性流动基本方程出发,以一般张量形式,严格地推导出了转动、任意非正交曲线坐标系下三元、稳定、不可压缩紊流流动的雷诺应力迁移方程、紊流动能方程和紊流能量耗散率方程。
短句来源
     In this paper the finite analytic method and K- e turbulent model for low Reynolds number are employed to solve Reynolds equations. In two cases of Reynolds number being 104 and 106 , the turbulent flow past a flood discharge tunnel is calculated and results are given for distributions of stream function, velocity, vorticity, turbulent kinetic energy and turbulent dissipation rate.
     本文采用有限分析法,低雷诺数K—ε紊流模型求解雷诺方程,计算了雷诺数为10~4和10~5两种情况下孔板消能区的平均紊流场,给出了流函数、速度、涡量、紊流动能和紊流耗散率的分布。
短句来源
  turbulence energy
     DLR k ε turbulece model·BFC method was used to conduct numerical calculation for three calculated examples of turbulent flow on a conical diffuser. The results of calculation showed that the wall value ε in,w of the inlet boundary condition of turbulent dissipation ratio had considerable influence on the distribution of longitudinal velocity ,turbulence energy k and eddy viscosity υ t in the centre of flow field but less influence on ε distribution.
     用DLR型k ε紊流模型·BFC法对锥形渐扩管内紊流的 3种算例进行了数值计算 ,计算结果表明紊流耗散率入流边界条件壁面值εin ,w对主流动方向时均速度 u、紊流动能k和涡动粘性系数υt 在流路中心分布的影响较大 ,而对ε分布的影响较小。
短句来源
     The Reynolds numbers of the calculated cases at the entry of pipe were 2.93×105 and 1.16×105. This paper gives out the numerical results such as mean velocity in the leading flowing direction, turbulence energy, shear stress, and compares the rate of pressure rehabilitating in a conical diffuser with outlet pipe and one in a conical diffuser without outlet pipes.
     应用实例的入口雷诺数为 2 .93× 10 5和 1.16× 10 5。 给出了主流动方向时均速度、紊流动能、雷诺应力和壁面压力系数分布的数值预测结果。
短句来源
     The research has been done for pipe entry Reynolds numbers of 293 000 and 116 000 .The calculated result of the distribution of the mean flow velocity and turbulence energy has been given out under the different calculated conditions, such as grid numbers and difference method. It was analysed and compared with the test result respectively, and it got the effect of calculated result under the different calculated conditions.
     所研究的紊流在入口的雷诺数为2 93 0 0 0和1160 0 0 .在不同的网格数和差分方法等计算条件下分别给出了时均流速、紊流动能分布的计算结果,并分别与实验结果进行比较和分析,得知在不同计算条件下对计算结果的影响程度.
短句来源
     The research has been done for pipe entry Reynolds number of 2. 93×105 and 1.16×105 ,and has given the efficiently computed results such as mean velocity profiles, turbulence energy profiles, shear stress profiles, and mean pressure distribution.
     应用实例在前接管入口的雷诺数为2.93×105和1. 16×105,给出主流动方向时均速度、紊流动能、雷诺应力和壁面压力系数分布的数值预测结果。 3种应用实例的计算结果与实验结果较好符合。
  “紊流动能”译为未确定词的双语例句
     The two variables in the model are the kinetic energy of turbulence and its rate of dissipation.
     本文中应用了两微分方程的紊流模型,即紊流动能与它的耗散率。
短句来源
     The conclusion indicates the optimum value of A 1/A 2 is from 1.2 to 1.5,where A 1 is the area of the wetted cross section in the corner and A 2 is the area of the wetted cross section in the gallery.
     结果表明絮凝池转弯处过水断面面积A_1 与廊道过水断面面积A_2 的比值A =A_1 / A_2 ,这一影响流场紊流动能的设计参数的最佳范围是 1 2~ 1 5。
短句来源
     The two variables in this model are the kinetic energy of turbulence and its rate of dissipation.
     本文中应用了两微分方程的紊流模型,即紊流动能与它的耗散率。
短句来源
     The turbulence characteristics of flow in the junction region of the endwall and the suction surface of blade of a compressor cascade passage were measured by using a three-dimensional Laser Doppler Velocimetry system. The result indicated that the turbulence kinetic has a maxima in the core regions of the streamwise vortex and regions that interacted between the vortex and boundary layer, and the vortex or motion of the vortex has strong influence on the distributions of the Reynolds stress.
     本文用三维激光多普勒测速技术测量了平面扩压叶栅的叶片吸力面角区流动湍流特性,如紊流动能分布、雷诺应力分布等.分析了角区内流向涡和通道涡对湍流特性分布的影响,结果表明:流向涡的核心区域及旋涡与附面层相互作用区域的湍流动能增加.同时,旋涡和旋涡运动强烈影响着雷诺正应力和切应力的分布规律.
短句来源
     The results show that the electric efficiency of the stirrers with Gramme winding and dispersive winding are higher than that with centralize winding at the same stirrer length, coil numbers and current intensity, so that higher magnetic intensity, velocities and kinetic energy can be obtained in the molten steel.
     结果表明 ,在搅拌器长度、线圈匝数及电流强度均相同的条件下 ,采用集中绕组的搅拌器所产生的电磁场最弱 ,而重叠绕组搅拌器和克兰姆绕组搅拌器的电能利用率较高 ,所产生的磁场强度较大 ,钢液的流动速度和紊流动能均较大 ;
短句来源
更多       
查询“紊流动能”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  turbulent kinetic energy
Gas streamlines, turbulent kinetic energy isolines, and turbulent viscosity isolines are determined at various operating and design parameters.
      
Basic dynamic parameters of turbulent flow (velocity profiles, stream-function isolines, vortex strength, turbulent kinetic energy, turbulence scale, and effective viscosity) are calculated using the K-ε model and the Kolmogorov-Prandtl closure.
      
The influence of a solar eclipse on the turbulent kinetic energy, turbulent heat flux, and variance and spectral density of the power of air-temperature pulsations are estimated.
      
Two new results were obtained: the theoretical estimate of the contribution of the wind waves to the flux of the turbulent kinetic energy at the sea surface and the model estimate of the effect of wind waves on the marine dynamics.
      
Flow patterns and dissipation of turbulent kinetic energy in near-wall turbulence
      
更多          
  turbulence energy
We consider a system consisting of the equation of motion, the equation for the turbulence energy, the expression relating the turbulence coefficient with the turbulence scale, and the integral formula for determining the turbulence scale.
      
Use of the turbulence energy equation in the theory of jet flows
      
Development of techniques and investigation of turbulence energy at the axis of a two-phase turbulent jet
      
In flows with variable density, the turbulence energy equation contains a large number of correlations, about which little is at present known [1].
      
An approximate theory is proposed for describing the effect of large vortices on the pressure pulsations, the profiles of the pulsation velocities, the turbulence energy, and the velocity correlations (turbulence friction stresses).
      
更多          


This paper presents the results of the analysis and numerical solution of the three-dimensional turbulent incompressible flow in an S-shaped rectangular duct. The category of the flow in the duct is defined as partially parabolic situation in nature, so that the events at a downstream location are transmitted upstream but solely through the mechanism of pressure transmission.Under the curvilinear orthogonal coordinates considered the iterative procedure for solving the governing equations can be easily performed...

This paper presents the results of the analysis and numerical solution of the three-dimensional turbulent incompressible flow in an S-shaped rectangular duct. The category of the flow in the duct is defined as partially parabolic situation in nature, so that the events at a downstream location are transmitted upstream but solely through the mechanism of pressure transmission.Under the curvilinear orthogonal coordinates considered the iterative procedure for solving the governing equations can be easily performed from the first bend to the end of the second bend of the duct. In the present study,a two equation turbulence model is employed.The two variables in the model are the kinetic energy of turbulence and its rate of dissipation. A comparison has been made between the theoretical and experimental results, and the agreement is satisfactory.

本文给出了矩形截面的S形弯曲管道中气流的三元紊流数学分析和对不可压缩情况进行的数字解结果。研究中将三元粘性紊流看作半抛物线形式,通过压力场来考虑气流的椭圆性质影响。在所取的正交曲线坐标下进行数字计算时,能将方程式方便地从S形管道第一弯段的气流转换到第二弯段。因而可使每次迭代从S管道的进口算到出口。本文中应用了两微分方程的紊流模型,即紊流动能与它的耗散率。计算得到的壁面静压分布及出口截面的静压和三向速度分布与实验数据作了比较,结果是满意的。

This paper presents the results of the analysis and numerical solution of the three-dimensional turbulent incompressible flow in an S-shaped rectangular duct. The nature of the flow in the duct is regarded as partially parabolic, so that events at a down-stream location are transmitted upstream solely through the mechanism of pressure transmission. In the curvilinear orthogonal coordinates considered an iterative procedure for solving the governing equations can be easily performed from the first bend to the...

This paper presents the results of the analysis and numerical solution of the three-dimensional turbulent incompressible flow in an S-shaped rectangular duct. The nature of the flow in the duct is regarded as partially parabolic, so that events at a down-stream location are transmitted upstream solely through the mechanism of pressure transmission. In the curvilinear orthogonal coordinates considered an iterative procedure for solving the governing equations can be easily performed from the first bend to the end of second bend of the duct. In the present study, a two-equation turbulence-model is employed. The two variables in this model are the kinetic energy of turbulence and its rate of dissipation. A comparison between theoretical and experimental results has been made, and the agreement is satisfactory.

本文给出了矩形截面的s形弯曲管道中气流的三元紊流数学分析和对不可压缩情况进行的数字解结果。研究中将三元粘性紊流看作半抛物线形式。在所取的正交曲线坐标下进行数字计算时,能将方程式方便地从s形管道第一弯段的气流转换到第二弯段。因而可使每次迭代从s管道的进口算到出口。本文中应用了两微分方程的紊流模型,即紊流动能与它的耗散率。计算得到的壁面静压分布及出口截面的静压和三向速度分布与实验数据作了比较,结果是满意的。

This paper reports the results of numerical solution of recirculating flow in the powdered-coal boiler burner with a bluff body. With a view to simplifying the calculation, the flow of the first vent in the direct flow coal burner is assumed to be a two-dimensional turbulent free jet. In this calculation, the orthogonal cartesian coodinate and a two-equation turbulence model is employed. The governing equations are continuity equation, momentum equation, kinetic energy equation and kinematic rate of dissipation...

This paper reports the results of numerical solution of recirculating flow in the powdered-coal boiler burner with a bluff body. With a view to simplifying the calculation, the flow of the first vent in the direct flow coal burner is assumed to be a two-dimensional turbulent free jet. In this calculation, the orthogonal cartesian coodinate and a two-equation turbulence model is employed. The governing equations are continuity equation, momentum equation, kinetic energy equation and kinematic rate of dissipation equation. The elliptic differential equations are transformed into the discretization equations by the cell integration method.A simple method dealing with inclined wall of the cone-body in recirclating flow is presented specially. The lengths of the recirculation zones are measured by the hot wire anemometer and the flourscent wire to check up the method. A comparison has been made between the predicted and the experimental results, and a good agreement is found.

本文给出煤粉锅炉钝体燃烧器中回流流动的数值计算结果。为了简化,把直流式煤粉燃烧器中一次风看作为二元紊流自由射流。在研究楔形物体后回流流动中,本文还提出一种处理楔形物体斜壁面的方法。在本计算中,采用控制容积法离散二元椭圆型微分方程,紊流动能k和紊流动能消耗率ε的紊流模型。为了验证计算方法的合理性,本文还用热线风速仪和荧光丝法测定回流区长度,把所得的实验数据与计算值加以比较,结果是满意的。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关紊流动能的内容
在知识搜索中查有关紊流动能的内容
在数字搜索中查有关紊流动能的内容
在概念知识元中查有关紊流动能的内容
在学术趋势中查有关紊流动能的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社