雷諾實驗 的英文怎麼說
中文拼音 [léinuòshíyàn]
雷諾實驗
英文
reynolds experiment- 雷 : 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
- 諾 : Ⅰ動詞(答應; 允許) promise Ⅱ感嘆詞(答應的聲音) yesⅢ名詞(姓氏) a surname
- 實 : Ⅰ形容詞1 (內部完全填滿 沒有空隙) solid 2 (真實; 實在) true; real; honest Ⅱ名詞1 (實際; 事實...
- 驗 : 動詞1. (察看; 查考) examine; check; test 2. (產生預期的效果) prove effective; produce the expected result
- 雷諾 : jean renoir
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Abstract : in this paper, an analytical study of the dynamics of the piston in a reciprocating internal combustion engine is conducted. the equations of reynolds and moving of piston are derived. a useful method of solution is obtained. the method is applied to s1100 diesel engine. the results of this study indicate that piston oil film is found to be sensitive to the piston - cylinder bore clearance, the location of the wrist pin and lubricant viscosity
文摘:對往復式內燃機活塞的動力特性進行了分析研究,導出了活塞潤滑的雷諾方程和活塞運動方程,給出了可供實用的求解方法,並採用這種計算方法對s1100柴油機進行了設計計算與試驗研究.研究結果表明,活塞潤滑油膜歷程與活塞& &缸套的間隙、活塞銷的位置、潤滑油的粘度等因素密切相關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,而主流雷諾數對葉片表面特別是壓力面和前緣區域的換熱系數比的影響較小,吹風比對換熱系數影響較大(特別是導葉) ,並且隨氣膜孔位置和來流雷諾數的變化而情況復雜。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雷諾數( 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數及其它相應變化的參數(氣膜孔的雷諾數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影響規律。In this paper, by checking up the heat calculation about the experiment results of the single row tube and double waves belt, i come at the function of the heat transfer factor j and the reynolds number re, i also come at the function of the f r i ct i on factor ^ " and the reyno i ds number re
本文還通過對單排雙波帶散熱器的實驗結果進行校核熱計算,回歸導出該種散熱器的傳熱因子j及摩擦因子f與雷諾數re的數學表達式,從而為用這種芯子根據廠家要求設計散熱器提供了理論依據。A better numerical simulation of ice accretion on airfoil
低雷諾數渦輪葉柵損失的實驗與數值模擬研究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
利用變模型常數的-模型針對不同尺寸的擋環進行了再附著長度的模擬計算,在實驗雷諾數范圍內,建立了入口處擋環對再附著長度影響的變化曲線,分析了再附著長度在不同的管流流動狀態下相對于雷諾數的變化情況。The experimental results show that the gridding rib has significant effects on heat transfer enhancement. the nuselts number increases as re increases
實驗結果表明,網格式內冷通道中,隨著來流雷諾數re的增加,通道換熱效果增強。The results indicated with the re raising, the rectangle channel ' s heat transfer enhanced gradually, which channel installed the baffle on its above and below
實驗結果表明,上下壁面安裝折流板的矩形通道中,隨著來流雷諾數re的增加,通道換熱效果逐步增強。The measurements of discharge coefficients and pressure coefficients along the models with aspect ratios of 0. 5, 1. 0 and 2. 0 were carried out under various aerodynamic and geometric parameters ( reynolds numbers : 20000, 40000, 60000, 80000 ; suction rates : 0. 3, 0. 45 and 0. 6 ; rib angles : 45, 60, 90, 120 ; rib height - to - width ratio h / e : 1. 0 and 2. 0 ; film hole location : middle of ribs. upstream of ribs and downstream of ribs ). based on the abundant experimental data and figures, rules of discharge coefficients and pressure coefficients in dependence of geometric and aerodynamic parameters were given out
根據實驗課題的要求,在寬高比分別為1 . 0 、 2 . 0和0 . 5的內流冷卻通道里,在不同的氣動和幾何參數(雷諾數re分別為20000 、 40000 、 60000 、 80000 ,出流比sr為0 . 3 、 0 . 45和0 . 6 ,肋角分別為45 、 60 、 90 、 120 ,肋高h e分別為1 . 0和2 . 0 ,孔位分別為肋中間、肋下游和肋上游)的情況下,對流量系數和壓力系數以及流場進行了實驗研究,獲得了大量的實驗數據和圖形,較為詳細地給出了流量系數和壓力系數隨不同氣動參數和幾何參數而變化的規律。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雷諾數提前;改變流體的進出口方向對熱沉總壓降造成的影響很小;摩擦系數的實驗值與理論值較接近;數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影響。The result of the flow experiment shows that the critical re number ( from laminar to turbulence ) decreased when the diameter of the tube becomes smaller
流動實驗結果表明,層流向湍流轉捩的臨界雷諾數隨管徑減小而減小。It is found in the experiments that film hole reynolds number and rib angle have great influence on film hole discharge coefficients
實驗中發現氣膜孔雷諾數和肋角對流量系數有較大的影響。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。The numerical results show that the flow - field structures and main features of the compressible mixing layer including the distribution of mean velocity, turbulent fluctuation intensities, reynolds stress and growth rates agree well with experimental and other numerical results
計算出的流場結構和主要的流動特徵包括平均速度、湍流脈動強度和雷諾應力的分佈以及混合層擴張率都同實驗測量和其他時間發展數值模擬結果符合得很好。The results show that for all of parameters considered in this study, the friction factor of fin surface without vgs is smaller than that for fin surface with vgs ; the increase of friction factor under low reynolds number is large, but with reynolds number increasing, the increase of friction factor is quite small
實驗結果表明:在不同管間距、板間距時,板芯裝渦產生器阻力系數均比光板板芯的阻力系數大,並且在低雷諾數時的增幅比較大,隨著雷諾數的提高,阻力系數逐漸降低並趨于平緩,且阻力系數增幅大大減少。The experimental model is a rectangular section of 15. 2 187mm ~ 2, which is composed of two aluminum plates. the angles between the internal netted rib turbulators and the flow direction are 45 ? for the one plate and 60 ? for the other, or both 45 ? for two plates. in the experiment, the re numbers changes from 0. 4 10 ~ 4 1. 5 10 ~ 5, rib width - to - pitch are 0. 25, 0. 3 and 0. 5, rib width - to - height are 0. 25, 0. 3 and 0. 5, the rib height - to - hydraulic diameter ratio is 0. 246
主要研究了在通道進口截面積(即無肋處的截面積) a為15 . 2 187mm ~ 2 、肋高與通道當量直徑之比e / de等於0 . 246 ,實驗雷諾數范圍在0 . 4 10 ~ 4 1 . 5 10 ~ 5之間的情況下,雷諾數re 、肋向角a 、肋寬與肋高之比t / e和肋寬與肋間距之比t / p等參數對通道強化傳熱與流動阻力特性的影響。In the simplified mathematical modeling, fins are taken as equivalent solid layer with nonisotropic thermal conductivity, and heat convection between fins and cooling air is considered as internal source
對2種飛機環控系統電子設備冷卻用冷板進行了實驗研究,測量了不同雷諾數、不同熱源分佈情況下冷板的表面溫度分佈。By use of grid - shaping skill and multi - grid solver, the flow - induced vibration of the fluid - conveying pipe in water is studied. the vibration mechanism of the fluid - conveying pipe in water is analyzed, the lift and drag acting on pipe in water are calculated. the results obtained are analyzed and compared to the experimental data referred to
首先對水下輸液管道繞流渦激振動的機理進行了分析,然後,利用網格生成技術及多重網格法求得了輸液管道在不同來流條件(雷諾數)下的橫向升力系數及縱向阻力系數,最後對計算結果進行了分析,並將其與已有的間接實驗結果進行了對比。It is believed that it can bring the important inspiration for the future medical micro robot which can be embedded into inner organ of human for inspection, drug spot deliverance and local body surgery. supported by supported by the nation nature science foundation of mechanism, structure and control study on swimming micro robot in liquid ( item no. 69885002 ) and guangdong province science foundation of research on swimming micro robot in liquid ( item no. 980402 ) and guangdong province education department foundation of research on micro pipe robot driven by liquid self energy ( item no. 010043 ), this dissertation mainly deals with much theoretical and, including research situation and the main issue of micro mobile robot in liquid, fish propulsion mechanism, design and locomotion mechanism, and flagellum - like propulsion swimming micro robot in low reynolds number viscous liquid
本論文得到國家自然科學基金項目「泳動微機器人的機理、機構和控制」 (項目資助號: 69885002 ) 、廣東省自然科學基金項目「液體中泳動微機器人的研究」 (項目資助號: 980402 )和廣東省教育廳基金項目「基於流體自身能量的微管道機器人研究」 (項目資助號: 010043 )的資助,主要對液體中微機器人的國內外研究現狀和主要研究問題、魚類推進機理、液體中微機器人的設計與運動機理、低雷諾數粘性液體中仿鞭毛推進微機器人研究等方面進行了大量的理論與實驗研究。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。分享友人