friction factor 中文意思是什麼

friction factor 解釋
磨擦系數
  • friction : n. 1. 摩擦，阻力。2. 傾軋，沖突，不和 （between）。3. 擦熱皮膚。
  • factor : n 1 〈英國〉經銷人；（代客買賣收取傭金的）經紀人；代理商；代辦人；〈蘇格蘭語〉 土地經管人。2 要素...
  1. Taking the contact stress, bend stress stiffness and temperature stress as the condition, taking the weight of the kiln tyre as optimization aim function, the redia and the width of the tyre are optimized general optimize methods just consider the affecting of the parameters to aim function, but in fact, structural parameters ( such as structure dimension, interval and so on ), physics and dynamics ( damp factor, conduct factor, friction factor material ' s elastic module strength limits and so on ), which would be changed after used. the difference are called discrepancy robust design ' s basic concept is : all design parameters " discrepancy will affect the aim funct ion and arouse the quality target discrepancy

    一般的優化方法，僅僅考慮了參數對其目標函數的影響，而實際情況下有些參數是變化的，產品的結構參數（如幾何尺寸、間隙等） 、物理和力學參數如阻尼系數、傳導系數、磨擦系數、材料的彈性模量和強度極限等的設計值與製造后和使用中的實際值會有差異，這種差異稱為設計變量和噪聲因素的變差。
  2. 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影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；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。
  3. A new method for studying friction factor of head loss

    沿程水頭損失系數研究的一種新方法
  4. How to give out the friction factor and the regula r pattern is the importance of researching the prestressed loss in the long steel rope

    如何合理地給出摩阻損失系數或找出其變化規律，成為長索預應力損失估計的研究重點。
  5. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  6. Measurement and application of friction factor in a moving slip

    動滑動摩擦因數的測試與應用
  7. 3 ) a 3 - d geometry and finite element model of the assembly of the obturator of the breech mechanism is established. quasi - static and dynamic finite element analysis of stiffness, strength and obturating performance of the obturator of the breech mechanism is carried out, based on elastoplastic theory and multi - body contact algorithm, and the simulation results coincide with experimental results, further, th e effect of friction factor on its obturating performance is investigated

    建立了炮閂閉氣結構的三維裝配體幾何實體模型和有限元模型，對炮閂閉氣結構剛強度和閉氣性能進行了準靜態及動態多體接觸彈塑性有限元分析，分析結果與試驗結果相吻合，進一步研究了摩擦系數對其閉氣性能的影響。
  8. Graphical user interfaces are developed to be convenient for implementing of parameterized model and debugging of program parameters. program of optimization based on ga is designed to optimize obturating performance of the obturator of the breech mechanism, further, the effect of control parameters of ga and friction factor on the optimal structure is studied

    開發了實施參數化建模和程序參數調試的界面，編制了遺傳演算法優化程序，對炮閂閉氣結構進行了閉氣性能優化，並研究了遺傳演算法運行的控制參數對優化結果的影響以及摩擦系數對最優結構形式的影響。
  9. The result indicate the average value of static friction factor and dynamic friction factor for the central - left side is greater than the central - right side of runway

    針對靜摩擦系數或動摩擦系數，就所得結果跑道中心左側區域之平均值大於右側區域平均值。
  10. Relationship has been studied on defect to deformation degree, friction factor and relative length of mould plastic section

    同時，研究了表面缺陷產生與變形程度、摩擦因數及模具整形段相對長度的關系。
  11. The results showed that the friction factor of bn film was about half of that of the steel based materials, and the cohesion between film and substrate could obviously be increased by the ni - p interface layer

    結果表明：氮化硼薄膜的摩擦因數約為鋼基材料的一半，中間層鎳磷合金的加入使薄膜結合力顯著提高。
  12. Our products are widely used in brake manufacturing of motorcycles, automobiles, trains and planes as raw material with properties of steady braking, durability, excellent heat - sinking capacity, stable friction factor and low noisy

    本產品是摩托車，汽車，火車，飛機等運動機械制動蹄的主要原料，具有制動性能穩定，散熱性好，磨損率低，磨擦系數穩定，躁聲低等特點。
  13. After designing oil ditches on the surface of its arc - block, increase friction factor and make sure self - lock which solves above problem. do qualitative analysis to lower pair and one - way overrunning clutch and inner star - wheel - roller overrunning clutch by using self - made lever loader. the experiment shows : on the same condition, the deformation of new overrunning clutch ’ s surface contact with lower pair is smaller than the deformation of roller overrunning clutch ’ s line contact with higher pair and new overrunning clutch ’ s skid angle is smaller

    對低副單向超越離合器的部件進行了加工製造，在超越離合器弧塊表面創新設計加工排油溝，增大摩擦系數，保證實現自鎖，解決了很多離合器工作過程中容易出現無法自鎖的問題;對低副單向超越離合器和內星輪滾柱超越離合器用自製杠桿加載器做了定性分析，實驗表明:相同條件下，新型離合器低副面接觸比滾柱離合器高副線接觸變形小、溜滑角小。
  14. ( 6 ) as dean number is increased, the secondary flow firstly becomes symmetry and then the anticlockwise vortexes are enlarged, the contours of axial velocity and the stream function become symmetry, the secondary flow is intensified and the friction factor ratio increases

    （ 6 ）增大dean數，二次流先趨于對稱而後逆時針方向的二次渦增大，軸向速度和流函數等值線趨向于對稱，摩擦系數比增大。
  15. ( 5 ) as torsion is increased, the anticlockwise secondary vortexes and the negative area of the stream function increase ; the axial velocity moves anticlockwise ( annular pipe ) or clockwise ( circular pipe ) ; the friction factor ratio finally reaches the value about 1

    （ 5 ）增大撓率，逆時針方向旋轉的一二次渦和流函數的負值區域增大，軸向速度最大值的位置按逆時針（環形截面）或順時針（圓截面）方向旋轉，摩擦系數比最終趨向於1 。
  16. Moreover, the applicability of the incompressible friction factor is discussed. ( 3 ) the effects of surface roughness in microchannels were taken into account in terms of a roughness - viscosity function

    （ 3 ）將微管道表面粗糙度的影響等效為粗糙度粘性系數，提出適合於可壓縮流動的二維和三維粗糙度粘性系數模型。
  17. 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。
  18. 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。
  19. Calibrating the gravity model consists of evaluating the parameters of the impedance function ( or the values in the friction factor table ) so that the gravity model reproduces, as closely as possible, the base year productions and / or attractions and the base year trip length distribution

    校準重力模型就是計算阻抗函數參數（或者摩阻系數表中的值） ，使其盡可能吻合基年產生和吸引，以及基年的出行距離分佈。
  20. For different f, the effect of curvature and torsion on the flow structure, temperature distribution, the friction factor and nusselt number

    不同的f下撓率和曲率對流動結構、摩擦系數和nusslt數的影響不同。
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