槳速比 的英文怎麼說
中文拼音 [jiǎngsùbǐ]
槳速比
英文
advance ratio of propeller-
The control parameters influenced the loads of the stall wind turbine small. but it will be bigger to the variable pitch wind turbine and the variable speed wind turbine
對于bladedforwindows軟體，定槳距失速調節型風力發電機組控制參數的輸入量比較少，對機組載荷的影響也比較小。Compared with fix - pitch wind turbine, the variable - pitch wind turbine has the virtue : stable output power over rated power, high wind power coefficient, holding rated power at high wind speed, good starting and shut - off etc.
變槳距風力發電機組與定槳距風力發電機組相比，在額定功率點以上輸出功率平穩、具有較高的風能利用系數、能夠確保高風速段的額定功率、起動性能與制動性能好等特點。Autonomous underwater vehicles can mimic locomotion of aquatic animals - fishes that utilize oscillating foils as their propulsive elements. there are overwhelming advantages for them in speed, maneuverability, and noise over conventional man - made propeller
利用仿生水中生物魚類游動原理，可以製造出性能優良的水下推進系統，這種推進系統比現在所利用的螺旋槳在速度、機動性能和噪聲方面更為出色。Abstract : the synthesis, adsorptive properties and some other mechanical properties of a kind of high water - adsorbing fiber were studied, paper made from this high water - adsorbing fiber beaten with 80 % ( wt ) cotton, demonstrated that the fiber had rap id adsorption, high adsorptive capacity and holding capacity for all of distilled water, main - water and man - made urea, and had suitable mechanical properties to be used to make high water - adsorbing paper
文摘:本文報道了一種高吸水纖維的合成、吸水性能及其部分物理機械性能，並利用這種高吸水纖維與純棉纖維按1 ： 4的比例進行混合打槳而製成一種高吸水紙，對這種吸水紙也進行了吸水性能及部分機械性能的測定，結果表明所合成的高吸水纖維對蒸餾水，自來水及人工尿液的吸附速度快，吸收量高，並且可在一定的壓力下保持較高的吸水量，還可以與棉纖維混合成紙。In this paper, some off - line manual methods for regulation of flow equation have been compared and analyzed. based on pid speed governor of turbines, two kinds of governors are designed for adjustable - blade pump, which can perform autoregulation on water height of the fore bay and on pump output by adjusting the blade angle of adjustable - blade pump. the computation models of the two kinds of governors are also offered and the transient simulation can be done on pc
文中，比較分析了現有的多種離線手動調節流量平衡的方法，在水輪機pid調速器的基礎上，針對轉槳泵設計了兩種新型調節器，通過改變轉槳泵的葉片安放角，分別能對泵站前池水位和泵的輸出流量進行自動調節；提出了兩種新型調節器的計算模型，使轉槳泵在線自動調節動態模擬得以在微機上得以實現。The surface panel method has been applied to predict the hydrodynamic performance of highly skewed propeller. the surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution. for highly skewed propeller, the conventional method generating grid oriented along constant radii will result in a high aspect ratio and a high skewness and a twist panel near the propeller tip on blade surface, which result easily in incorrect calculation results of velovity on blade surface, even in iteration divergence and calculation failure. a “ non - conventional grid ” is developed to acoid these problems. this grid can effectively solve the problem of the calculation and convergence for highly skewed propeller. the non - linear kutta condition of equal pressure on upper and lower at the trailing edge is executed by the iterative procedure. by sample calculating, the obtained results are satisfied the experimental data
採用面元法預報大側斜螺旋槳水動力性能，螺旋槳表面及尾渦面離散為四邊形雙曲面元，每個面元上布置等強度源匯和偶極子分佈.對于大側斜螺旋槳而言，槳葉表面採用常規的等半徑網格劃分方法在近葉梢處將導致大展弦比、大側斜和扭曲面元，這容易使槳葉表面速度的計算結果不正確，甚至會導致迭代過程發散及計算失敗.文中建立了一種「非常規網格」劃分方法，能有效地解決大側斜螺旋槳的計算和收斂問題.槳葉隨邊處通過迭代實現非線性等壓庫塔條件He frames iron arms for his ship ; and, for oars, affixes iron wheels, capable of swift revolution, and stronger than the strong sea
他用鋼鐵製作船體的框架，用鐵輪來代替槳，帶來了速度上的革命，而且使他的艙比大海還要強大。分享友人