reynolds number range meaning in English
雷诺数范围
Examples
- In a reynolds number range of 150 < 6500 , a particle image velocimetry ( piv ) is used to measure and visualize the 2d flow over a backward facing step
摘要利用粒子图像测速技术( piv ) ，对雷诺数150 < 6500范围二维后向台阶的流动进行详细观测。 - In the numerical solution algorithm , the method of characteristics , analytic method and galerkin finite element method ( galerkin - fem ) can be chosen to solve the advective equation , diffusion equations , reaction ( source / sink ) equations , propagation equations and pressure poisson equation , respectively . the developed new algorithm has been verified using analytical solution of circular conduit flow in a reynolds number range of 100 < re < 1 000 and experimental data of the laminar flow over a backward - step facing step . the flow properties are well characterized by this three - dimensional numerical model
本论文在评述三维粘性流动数学模型已有研究成果的基础上，着重在数值计算方法的选择和定解条件的给定对数学模型计算结果的影响进行了研究，并首次提出了求解三维纯对流方程的高精度的拟协调单元法，建立了三维低雷诺数re流动的数学模型，并在圆管流动、台阶突扩矩形管道流动中得到验证和应用。 - In this paper , the working fluid is air . experimental study of the nine different structure parameters of 3 - d ift with staggered arrangement fins in the reynolds number range of 250 to 30000 is performed to investigate the characteristics of heat transfer and flow friction behavior . analyses and reduces the experimental data by the least square method , obtains the nusselt and fanning friction fitting criterion equations
本文以空气为工质，在re 250 30000范围内对九根具有不同肋形结构尺寸的肋叉排三维内肋管的换热及流动特性进行了研究，并运用最小二乘法分析和处理实验数据，获得努谢尔特数，范宁摩擦系数与雷诺数，肋几何参数的准则方程式。