雷諾準數 的英文怎麼說
中文拼音 [léinuòzhǔnshǔ]
雷諾準數
英文
reynold's number-
The critical value of these parameters and that of flow pattern criterion reynolds number of newtonian fluid are equally possessed of the character irrelative to fluid rheological property
這些參數的臨界值與牛頓液體流態準數雷諾數的臨界值，同樣具有與液體流變性無關的特點。By comparing the results with relative experiment data, it is shown that rng k - is more exactly than the other turbulent model. 2 ) the influences of axial inflow position, radial outflow size, rotating reynold number, non - dimensional mass flowrate and axial inflow angle on the flow and heat transfer characteristics were numerically investigated for a typical rotator - stator cavity with axial inflow, radial inflow and radial outflow. the correlations for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established
（ 2 ）針對一典型的徑向、軸向進氣，徑向出氣的轉-靜盤腔結構，系統研究軸向進氣位置、徑向出口大小、旋轉雷諾數、無量綱質量流量和軸向垂直預旋進氣等對盤腔內流動和換熱的影響，整理出轉-靜盤腔內轉盤平均努謝爾數與旋轉雷諾數無量綱質量流量之間的準則關聯式。It adopts reynolds time - average n - s equation and k - ? turbulence model to calculate the inner 3 - d viscid turbulence flow of centrifugal pump. in the unstructured grid, the governing equations are discretized with finite volume method based on finite element method. then the pressure correction method is used to carry out numerical calculation
而後採用基於雷諾時均n - s方程與標準-湍流模型來求解離心泵葉輪內三維粘性紊流，在非結構化網格中，採用基於有限元的有限體積法對方程進行離散，用壓力校正法進行數值求解。Re = 200 is just beyond the critical reynolds number of mode a. the numerical results of the present paper indicate that the near wake at this supercritical reynolds number is in three - dimensional quasi - periodic laminar state with transitional behaviors
Re = 200是剛超過模式a的臨界雷諾數，計算結果表明，此時近尾跡流場處於三維準周期層流狀態。Numerical simulation on the three - dimensional turbulence flow in the pick - up tube is based on reynolds time - average navier - stokes equations. the k - turbulence - closed model is used in this paper. in the near wall area the standard wall function is used
對集流管的三維粘性紊流模擬計算是建立在雷諾平均的navier - stokes方程的基礎上，紊流封閉模型採用目前工程上應用比較廣泛的模型，在靠近固壁區採用了標準的壁面函數法。The experiment was carried out in two situations, without net flow and with net flow. the influence of oscillatory flow reynolds number ( re0 ) and strouhal number ( si ) to the injection dispersion performance of ofm was explored
實驗分無凈流量和有一定凈流量兩種情形，探討了振蕩雷諾數re _ o 、斯特勞準數st對振蕩流場中的注入分散特性的作用以及凈流雷諾re _ n的影響情況。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
本文以空氣為工質，在re 250 30000范圍內對九根具有不同肋形結構尺寸的肋叉排三維內肋管的換熱及流動特性進行了研究，並運用最小二乘法分析和處理實驗數據，獲得努謝爾特數，范寧摩擦系數與雷諾數，肋幾何參數的準則方程式。In the field of securities investment, earning rate, standard deviation, sharpe index, treynor index and jensen index are five important indexes for assessing fund performance
摘要在證券投資領域中，收益率、標準差、夏普指數、特雷諾指數和詹森指數是評價基金績效的五個重要指標。The standard k - e turbulence model was employed in the core region of the cavity. two low reynolds number turbulence models, single equation model and launder and sharma low - reynolds number k - e model, were used in the near wall regions
在紊流核心區採用標準k -模型，近壁區分別採用單方程模型和launder ? sharma低雷諾數k -模型，採用simple演算法，求解並獲得了盤腔中的速度和壓力場、全域的溫度場以及流固界面上的換熱系數和努謝爾數分佈。In this thesis, the strongly swirling turbulent flow in gas - solid cyclone separators is simulated using the standard k - ? rng k - and reynolds stress equation models ( dsm ). it is demonstrated via comparison between the simulation results with experimental data that the dsm model is superior to the other models
針對分離器內部的這種復雜氣-固兩相湍流運動，本文採用了標準k -模型、 rngk -模型和雷諾應力模型（ ssg ） ，利用貼體網格技術，模擬計算了分離器內部流動，並將計算結果與實驗數據進行分析、比較。分享友人