翼形效率 的英文怎麼說
中文拼音 [yìxíngxiàolǜ]
翼形效率
英文
efficiency; airfoil-
In order to imitate tune tail fin better, a flexible fin only in chordwise is considered. results shows that flexibility can increase the propulsive efficiency and cause small decreases in the average thrust compared with a rigid caudal fin with similar motion. next, a comparison between the rectangle fin and the lunate fin is given
為了使數學模型更貼近生物模型，本文又將尾鰭處理為只考慮弦向變形而不考慮展向變形的柔性體，兩者對比的結果表明，柔性翼使得平均推力減小，但是，對具有相同推力的柔性翼比剛性翼具有更高的效率。The results showed that process parameters varied with time in fermentation was distinct for different agitator and the hydrofoil impeller instead of the disc turbine impeller might significantly reduce power consumption under the same condition
研究結果表明： （ 1 ）與傳統的渦輪攪拌槳相比，翼形軸流槳攪拌其發酵過程參數（粘度、溶氧、效價等）隨時間的變化曲線有明顯的差異； （ 2 ）在相同的生產條件下，用冀形軸流槳代替渦輪槳可有效提高生產效率。The rayleigh - ritz method is used to lead to analytical expressions for the stiffness and mass matrices and load vector as well as their sensitivities, which uses the simple polynomials to define assumed displacement functions, geometry and construction of wing structures. excluding some selected terms from the displacement functions or using stiff springs at the specified locations imposes boundary conditions. the accuracy of calculated results is improved by including transverse shear effects and using multiple sets of ritz functions in the analysis
它使用簡單多項式作為ritz基函數、定義翼面的幾何和結構參數，利用rayleigh - ritz方法導出翼面結構的剛度矩陣、質量矩陣和載荷向量及其靈敏度的解析表達式，通過排除位移函數中某些選定的項或在指定點使用約束彈簧施加各種邊界條件，考慮橫向剪切變形和使用多組ritz基函數改進分析的質量，使用等效蒙皮和等效夾芯技術提高計算效率。Attaching mesh generation sources to the moving boundary allows a reasonable mesh distribution after remeshing. quadtree data structure is used to accelerate the searching operation during interpolation. results of mesh deforming about a rotating airfoil show that the new spring analogy greatly improves the deforming ability and mesh quality without lowering the efficiency
以偏轉翼型動網格為例驗證了網格變形技術，結果表明：改進后的彈簧近似方法在保持原有高效率的同時，大大提高了網格變形能力和變形后網格質量。分享友人