管壁摩擦系數 的英文怎麼說
中文拼音 [guǎnbìmócāxìshǔ]
管壁摩擦系數
英文
pipe friction factor- 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
- 壁 : 名詞1 （墻） wall （of a house etc ） : 銅墻鐵壁 bastion of iron2 （作用像圍墻的部分） wall of st...
- 摩 : 摩構詞成分。
- 擦 : 動詞1 （摩擦） rub 2 （用布、 手巾等摩擦使干凈; 揩拭; 抹） wipe; scrub; clean 3 （塗抹; 搽） spre...
- 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
- 數 : 數副詞（屢次） frequently; repeatedly
- 管壁 : tube wall; shell of pipe
- 摩擦 : 1 （互相接觸的兩物體作來回相對運動） rub; chafe 2 [物理學] （相互接觸的兩物體在接觸面上發生阻礙相...
- 系數 : [數學] coefficient; ratio; modulus; quotient; factor
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Product character ： good flow, film smooth, excellent adhesion, reduce the coefficient of rub and cut down the obstruction of transportation
作用同時可有效降低管道內壁摩擦系數，減少輸送阻力。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。In order to improve the prediction accuracy, the sensitivities of pipe friction coefficients, pressure loss coefficients in bents, wall temperatures and heat transfer coefficients in pipes and cylinders on the volume efficiency are investigated
為提高充氣效率的計算精度，由模擬計算和相關試驗，分析了管道的摩擦系數、彎管的壓力損失系數、進氣管壁和氣缸壁溫度及其傳熱系數對充氣效率的影響程度。6th, wear resistant, pipe wall friction coefficient low, the resistance to flow is small, delivery capacity
6耐磨性強，管壁摩擦系數低，流阻小，輸送能力強Depending on different natures of materials to be conveyed, the pipe inner surface can be lined with a metal either the same as or other than the pipe base metal by means of the plastic deformation complex technique so as to meet the following requirements : 1 ) increasing both corrosion resistance and wear resistance of the pipe inner surface ; 2 ) reducing the friction factor and the resistance against the materials being conveyed in the pipe line ; 3 ) easy processing, installation and maintenance of the pipe line
根據輸送物料的性質，採用塑性變形復合方法在管道內壁鑲襯異種或同種金屬管，可以實現以下目的：增強管道內表面的耐腐蝕性和耐磨性；降低摩擦系數，減小物料的輸送阻力；便於管道的加工、安裝和維修。分享友人