流动参数 meaning in English
flow parameters
Examples
- Relaxation factors are adopted . a program is produced to simulate swirling air flow in a horizontal straight pipe and compare with experiment data . the simulation prove that the modified k - model can predict the core , annular and wall regions near entrance and axial velocity far from entrance , but it ca n ' t predict tangential velocity well in weak swirling area far from entrance
编程计算水平圆管内螺旋气流的流动参数并与实验数据对比，结果表明修正-湍流模型在近入口处基本上能预测出中心区、环形区和近壁区的流动特性，在远离入口弱旋流区域对轴向速度的预测符合实际情况，但是出现对周向速度修正过大的现象。 - A new method should be discovered to design the function block . the thesis is based on the rheology and hydrokinetics of the polymer melt , and calculates the velocity in the die by fem simulation , and provides die design with theory proof . according to the existed theory , i summarize and conclude the fem formula of the polymer flow , and then write the program to calculate on the computer
本论文中功能块结构的研究，是以熔体的流变性以及流体动力学理论基础上，对在口模中的熔体进行数值模拟，计算出熔体在口模中的流动参数(主要是速度的分布) ，从而可以科学的对功能块几何结构进行优化。 - Reynolds numbers ( based on average velocity at passage inlet and hydraulic diameter of the passage ) are changing from 20000 to 80000 and the extraction ratios ( suction ratios , sr ) are changing from 0 . 30 to 0 . 60 for each test model . so the influences of reynolds numbers , suction ratios and etc . on the discharge coefficients and pressure loss characterist ics are also presented . flow fields of typical passages are visualized with the flow visualization techniques and measured with hot - wire anemometer
对每一种通道结构，实验在不同通道进口雷诺数( re = 20000 、 40000 、 60000 、 80000 )和不同通道总出流比( sr = 0 . 30 、 0 . 45 、 0 . 60 )下进行，以研究这两个流动参数及其它相应变化的参数(气膜孔的雷诺数re _ h 、气膜孔与通道的动量比i等)对出流特性和流阻特性的影响规律。 - Based on prandtl ' s momentum transportation , this paper calculates in detail the physical quantities such as eddy viscosities , and ratio of eddy viscosity to motion viscosity , total stresses with respect to relative position in three regions of viscous sub - layer , buffer layer , and main turbulent stream for non - newtonian fluid flowing turbulently in ducts , which according to karman ' s three layer models and measurement of fluid parameters in evaluation apparatus , discusses the influence of polymer drag reduction on flowing properties of non - newton fluid , analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate
摘要以普兰德动量传递理论为基础，按照卡门的三层模型，通过室内模拟环道用0号柴油及加入减阻剂在圆管内的流动参数的测定，计算了非牛顿型流体管内湍流边界层的层流内层、过渡层、湍流中心的涡流粘度，涡流粘度与运动粘度比、总应力随相对位置的变化等定量参数，探讨了高分子减阻剂对非牛顿流体流动特性的影响，对湍流减阻现象的机理与增大减阻率的条件进行了定量分析。 - In the theoretical aspect , performance analytical model of was proposed , in which allowances were made to allow for variable cross - sectional area , include the heat release of chemical reaction , and allow for mass addition . software was generated , and performance of rocket ejector was analyzed accounting for heat release location , flow parameters and structural configuration
在理论方面，建立了引射火箭模态的性能分析模型，该模型考虑了化学反应放热、加质和变几何截面的影响；编写了相应的软件，并结合放热位置、流动参数和发动机结构进行了引射火箭的概念设计。