雷諾數影響 的英文怎麼說

中文拼音 [léinuòshǔyǐngxiǎng]
雷諾數影響 英文
influence of reynold's number
  • : 1. (雲層放電時發出的響聲) thunder 2. (軍事上用的爆炸武器) mine 3. (姓氏) a surname
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  • 雷諾 : jean renoir
  1. ( 2 ) the results reveal that the pre - swirl ratio has a great influence on the flow field of the rotating disk, even greater than the rotational reynolds number, and an initial constant is induced in moment coefficient cm and average nusselt number nuave correlations, which does not exist in the case of without pre - swirl

    ( 2 )分析了預旋系_ r對該旋轉盤腔流場的,定義了一個新的壓力系c _ p ,該壓力系c _ p沿徑向位置的變化對特定的旋轉re _是一個常
  2. The effect of reynolds number on rudder hydrodynamic performance is also analyzed. up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under - predicted. the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces

    應用所開發的求解器,以naca0015翼型舵為算例計算了船舵在不同武漢理三;大學博士學位論文下大舵角范圍內的三維粘性流場及水動力,成功地預報了舵的失速角和最大升力,並初步探討了對舵水動力的;計算結果與現有試驗和計算據比較,吻合程度相當好,初步檢驗和驗證了該求解器精確模擬粘性流動和計算水動力的能力。
  3. The results indicate that : the high positioned air inflow do good to heat transfer in rotator disk ; different size of radial outflow have small effects on flow and heat transfer ; the heat transfer near rotating disk increases as rotating reynold number increases or non - dimensional mass flow rate increases

    結果表明,高位軸向進氣對轉盤換熱有利;不同的徑向出口大小對盤腔內的流動換熱不大;隨旋轉和無量綱質量流量增加,轉盤盤面的換熱效果增強。
  4. 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、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,整理出轉-靜盤腔內轉盤平均努謝爾與旋轉無量綱質量流量之間的準則關聯式。
  5. 4 ) in a pre - swirl rotator - stator cavities with discrete pre - swirl nozzles and blade - cooling entry holes, the influences of pre - swirl angle and flow parameter on the flow and heat transfer characteristics were numerically investigated. the correlation for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established. the results show that : advantage of per - swirl inflow is the effect of cooling the blade - cooling entry holes ; pre - swirl inflow increases heat transfer in rotating disk of pre - swirl chamber ; as pre - swirl angle increases, local nusselt number decreases in pre - swirl chamber ; the temperature of stator of inner rotator - stator chamber and per - swirl chamber decreases as rotating reynold number increases ; when the axial mass flowrate maintains constant, heat transfer in the rotating disk of inner rotator - stator cavities does n ' t change as per - swirl mass flowrate increases, while heat transfer in the rotating disk of per - swirl chamber increases ; when the pre - swirl mass flowrate maintains constant, change of the axial mass flowrate has effect on the whole cavity

    結果表明,預旋進氣的優點在於增強了葉片冷卻孔附近的對流換熱效果,局部努謝爾隨預旋角的增大而有所減小;隨旋轉的增加,不論是內轉靜腔室還是預旋腔室的靜盤上的溫度都不同程度的降低:當軸向中心進氣質量流量不變時,隨預旋進氣的質量流量增加,內轉靜腔室的轉盤盤面上的換熱基本沒有變化,而預旋腔室的轉盤盤面上的換熱效果增強;當預旋進氣質量流量不變時,軸向中心進氣的質量流量的改變對整個盤腔都有
  6. Effect of reynolds number on turbine cascade flow

    對渦輪葉柵流動的
  7. Results show that the influence of mainstream reynolds numbers on heat transfer coefficience is little and the heat transfer coefficience raise with the increase of reynolds numbers. the influence of the position of holes on heat transfer coefficience is complex and correlate with the mainstream speed and the balde surface curvature. and the influence of blowing ratio on heat transfer coefficience is more great ( especially to stator ), and show a complex relation to mainstream reynolds number and the position of holes

    實驗結果表明,不同孔位出流的換熱由於孔排下游表面來流速度及葉片表面曲率的不同而有不同的規律,而主流對葉片表面特別是壓力面和前緣區域的換熱系比的較小,吹風比對換熱系較大(特別是導葉) ,並且隨氣膜孔位置和來流的變化而情況復雜。
  8. 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

    對每一種通道結構,實驗在不同通道進口( re = 20000 、 40000 、 60000 、 80000 )和不同通道總出流比( sr = 0 . 30 、 0 . 45 、 0 . 60 )下進行,以研究這兩個流動參及其它相應變化的參(氣膜孔的re _ h 、氣膜孔與通道的動量比i等)對出流特性和流阻特性的規律。
  9. The effects of reynolds number, back surface of nozzle, aft - dome configuration and degree of submergence on aft - end internal flow were studied by both cold gas simulation and numerical simulation. it is showed that the separated flow is sensitive to the change of reynolds number and aft - end cavity configuration

    最後,利用冷流模擬與值模擬相結合的方法,研究了、噴管背壁形狀、后封頭形狀和潛入深度對燃燒室尾部流場的,結果表明流動的分離對和背壁區幾何邊界的變化很敏感。
  10. The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade

    葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題,本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上,建立了三維、可壓縮紊流的物理模型,得到了通用的求解辦法;利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型,計算了冷卻空氣通過這幾種通道時的流動與換熱情況,得到了各種不同情況下計算區域的溫度場、壓力場、速度場;在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的,並整理得到了各種通道形式下,努謝爾和阻力因子與的函關系;本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果,通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較,表明了這種新型鮚構的優勢,對于葉片內部通道冷卻結構的設計可以起到指導的作用。
  11. ( 2 ) on the leading edge, the film cooling effectiveness at the zone immediately downstream of the cooling holes is affected by blowing ratio and mainstream reynolds number, while the effects are not important in the downstream zone far from the cooling holes. ( 3 ) on the front half of pressure surface, the effectiveness increases with decreasing blowing ratio at the downstream near the cooling row and it is contrary at the downstream far from the cooling row. ( 4 ) on the rear pare of the pressure surface, the effectiveness decreases with increasing blowing ratio and does not vary so much downstream in the cases of higher blowing ratio

    研究結果表明葉片吸力面端壁附近區域壓力系分佈呈現出較強的三維特性,動葉吸力面尤其明顯;氣膜孔流量系隨吹風比的增加而增大,在高吹風比情況下,流量系逐漸趨于常;在不同型面區域,冷卻效率分佈有較大的差異,而且吹風比與主流程度也不盡相同;低吹風比下,孔出口下游附近可以得到較好的冷卻,中、高吹風比下,冷氣射流在加速流動主流的作用下返回壁面進行二次冷卻,孔下游較遠區域可以得到較好的冷氣覆蓋。
  12. In accordance with different tripping annulus at the inlet, the numerical simulations of the reattachment length were performed with the " variable c ? " model. in the range of experimental reynolds number, the tripping effect on the reattachment length was developed in the figure. the dependence of the reattachment length on reynolds number was also analysed in the different status of pipe flow

    利用變模型常的-模型針對不同尺寸的擋環進行了再附著長度的模擬計算,在實驗范圍內,建立了入口處擋環對再附著長度的變化曲線,分析了再附著長度在不同的管流流動狀態下相對于的變化情況。
  13. On basis of this solution, the influence of flow to the vibrating pipe is analyzed and the method of obtaining resonant frequency and resonant time are given

    之後,根據此解,對來流進行了分析,並給出了求解、分析共振頻率及共振時刻的方法。
  14. For newtonian fluid, the influence of the plate undulations, the reynolds number and the thickness of the film are shown by parameter studies ; for non - newtonian fluid, the shear - thinning coefficient on the film flow is shown by parameter studies

    在薄膜流動過程中,考慮波形板的輪廓形狀參變化、流動中的大小、薄膜厚度的變化以及非牛頓流體的剪切變稀系對薄膜流動的流變特性
  15. 4. for steady incompressible flows, the effects of reynolds number and thickness of airfoils on the aerodynamic characteristics are studied

    研究了在二維定常不可壓流動狀態下和翼型厚度等參對翼型氣動特性的
  16. The experimental results of the flow characteristics of the mmc heat sink indicate that the critical reynolds number signifying the transition from laminar flow to turbulent flow is in advance ; under the same experimental conditions, the variation in entrance direction of the microchannel inlet and outlet has little effect on the microchannel ; the experimental values of the friction factor of the de - ionized water in a microchannel agree well with those calculated using the theoretical laminar formula ; furthermore, a comparison of the experimental results and simulation results shows that navier - stokes equation and rng - turbulence model can be used to model the laminar and turbulence flow regions in a microchannel ; meanwhile, the correlations of the flow resistance in the turbulent flow regions for the de - ionized water as the working fluids are obtained from experiments

    對歧管式單通道熱沉流動特性的研究結果表明,微通道內流體流態由層流向紊流轉變的臨界提前;改變流體的進出口方向對熱沉總壓降造成的很小;摩擦系的實驗值與理論值較接近;值模擬結果能夠與實驗值較好吻合;並由實驗給出了紊流區流動阻力的實驗關聯式。此外,選用十二烷基硫酸鈉( sodiumdodecylsulphate , sds )以及烷基多糖苷( alkylpolyglycoside , apg )作為減阻添加劑,研究了表面活性劑添加對微通道流動特性的
  17. It is found in the experiments that film hole reynolds number and rib angle have great influence on film hole discharge coefficients

    實驗中發現氣膜孔和肋角對流量系有較大的
  18. Three kinds of inflows with different combination of temperature and salinity are studied. results show that difference of diffusion between temperature and salinity have little effect on mean flow fields. but significant effects will arise when components are distinct in contribution to water density

    成果分析指出了溫鹽共同作用引起的高紊動浮力流動受溫度和鹽度的分子擴散速率差異的很小:但是因各組分對環境水體密度差異會造成不同的浮力流動特徵。
  19. 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re _ o 、斯特勞準st對振蕩流場中的注入分散特性的作用以及凈流re _ n的情況。
  20. The results show that the effect of reynolds number on the wind pressure distributions of these curved models is evident, and the contributions of the first several pod eigenvectors to the overall wind pressure distributions become much bigger

    結果表明,此類曲面模型表面風壓分佈受雷諾數影響明顯,且模型曲面特性使得風場本徵正交分解的前幾階特徵模態對整個風壓分佈的貢獻增大。
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