propeller blade 中文意思是什麼
propeller blade
解釋
車葉-
The paper analyzes the characteristic of aerodynamics with structure of helicopter propeller blade, dissertrates vortex theory and the theory about gliding air field which produce the power of helicopter propeller blade. at the same time it also deduce the method of computing the induced velocity produced by helicopter propeller blade with vortex theory. at last, an influcence to the spreading of sound is discussed
並且將兩種定位演算法進行了比較，說明了優劣；結合直升機的結構分析了旋翼的空氣動力特性，論述了直升機旋翼產生拉力的滑流理論和渦流理論，結合渦流理論論述了直升機旋翼流場誘導速度的計算方法，在此基礎上分析了直升機旋翼流場對聲音傳播的影響。 -
Based on the green ' s formula and the assumption of the propeller blade ' s thin sections, a lifting - surface method of propellers with the vortex lattice and equal source panel distributions on the mean camber surface has been introduced for the prediction of steady propeller ' s hydrodynamics in this paper. an approximate kurta condition was applied
基於creen公式和薄翼理論假設導出的升力面方法，採用在螺旋槳拱弧面上分佈離散渦、源布置方法預報均勻流場中的螺旋槳的定常性能，螺旋槳尾渦面上壓力連續性條件採用近似的kutta條件處理。 -
Mainly, the type of pump in the large - scale irrigation and drainage pumping station in our country is adjustable - blade propeller pump. we can regulate the pump ' s blade mounting angle following the variation of water level at the inlet and outlet of the station in order to control the discharge of pump, we also determine the number of running machines with machine ' s optimal combination. so we can reduce its energy consumption, and make it optimally and economically run
我國大部分大型電力排灌站所安裝的泵都為可調節葉片的軸流泵，這一有利條件使我們可以根據排灌站進、出口水位的變化來調節水泵的葉片角度，控制水泵的流量，併合理的確定開機臺數，通過機組間的優化組合，使整個泵站的能耗最少，達到整體最優、經濟運行的目的。 -
A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion
翼剖面；機翼；翼面一個部件或平面，如機翼、螺旋槳葉、方向舵等，其形狀或方位控制穩定性、方向、抬升、沖擊或驅動 -
The axial flow type turbines are available for hydrauric power resources of medium and low heads. ganfa manufactures both the propeller type fixed blade type and the kaplan type adjustable blade type turbines. the propeller type turbines are suitable for hydropower stations with small or medium capacities and heads, and relatively stable loads. the kaplan turbines are suitable for hydropower stations with medium or large capacities and heads, and relatively unstable loads
軸流式水輪機適應于開發中低水頭水力資源。我公司生產的軸流式水輪機按轉輪結構分為定槳zd轉槳zz兩種，定槳式一般適用於中小容量及水頭負荷變化較小的的水電站轉槳式多用於大中型電站及水頭負荷變化較大的水電站。 -
The surface of propeller, hub and the vortex of blade is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution
槳葉、槳轂表面和螺旋槳尾渦面採用四邊形雙曲面元離散，以消除面元間的間隙。 -
Under the condition of knowing the mass, stiffness, damping and the real vibration response of stem, the propeller pressure impulses of blade frequency are deduced, these belong to structure dynamics problem that is loading identification problem
摘要在已知船舶的質量、剛度、阻尼以及實測尾端振動速度的條件下，反推出螺旋槳葉頻激振力。 -
Comparisons also made among the calculated data of above two methods for the pressure distribution on blade section of the hd propeller and mau propeller, the results shown that the pressure distribution of the hd propeller is much uniform than the those of mau propeller
兩種理論預報的滬東型（ hd ）螺旋槳和mau圖譜槳的葉切面壓力分佈比較，結果表明，滬東型（ hd ）螺旋槳葉切面的壓力分佈較mau圖譜槳均勻。 -
This paper presents a design method of propeller blade section operating in non - uniform flow field and an idea of equivalent operating curve with unchanged cavitations characteristic on blade section, the method for selecting the curve is set up
摘要給出了非均勻流場中螺旋槳槳葉剖面的設計方法，提出了保持剖面空泡特徵不變的等效運轉曲線的思想，並創建了等效運轉曲線的確定方法。 -
The unknown source strength of cavitation is always arranged on the propeller blade surface in the solving process, but the integration is carried out along the cavity surface of last iterative step when the strength of cavitation dipole is determined according to dynamic condition
求解過程中待求的空泡源強始終布置在槳葉表面上，而在根據動力學條件求解每一步的空泡麵元偶極子強度時，積分是沿著上一步迭代確定的空泡表面進行的。 -
In the present work, there are two methods to design the shrouded - propeller. one is based on the blade element and momentum theory, the other is based on the ufbng - line ( surface ) theory derived from circumfluence theory
在實際工作中，函道螺旋槳的設計有兩種方法，一種是基於葉素理論與動量定理的工程方法；另一種是基於升力線（面）方法的環流理論方法。 -
When the propeller operates in the spatially non - uniform velocity field behind the ship, the unsteady cavitation on the blades often causes the vibration of ship structure, the propeller noise and the cavitation erosion on the blade
在船尾非均勻流場中工作的螺旋槳，常常由於槳葉上產生了非定常空泡，導致船尾振動和螺旋槳噪聲，致使槳葉表面出現空泡剝蝕。 -
Presently most of the theoretical method to predict the propeller - induced hull pressure fluctuation is based on the calculation method in which the pressure is induced by pulsating source in infinite flow. the calculation method is adopted and the corresponded computer program is complied. the propeller - induced hull pressure fluctuation due to blade thickness, blade load, cavity thickness and the change of the cavity volume can be analyzed respectively in the computer program
目前，螺旋槳誘導的船體表面脈動壓力的理論預報方法，大多是以無限流場中點脈動源誘導的周圍流場的脈動壓力的計算方法為基礎的，本文採用該方法編制了計算程序，可以分別考慮槳葉厚度、槳葉負荷、槳葉上空泡厚度及其體積變化在船體表面指定位置上產生的脈動壓力。 -
An operation decision method for multi - stage pumping station system with adjustable - blade propeller pump is presented. it includes optimal water level of individual stage of pumping station and optimal operation method of every pump. the paper describes some mathematical models and decision making technique of multi - stage pumping station
本文針對大型引水工程整個系統在進入穩態運行后，在各站的抽水流量或首級站進口水位發生變化的情況下及時做出運行決策，調整各梯級站間的水位，達到整個系統總能耗最小的目的。 -
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 -
To avoid or reduce these trouble induced by the unsteady cavitation, the theoretical design method for propeller and the blade section with the good cavitation performance are adopted to enlarge the cavitation bucket width and control the range and type of the cavitation on the blade. this enables propeller to operate in the non - uniform ship wake rather well
為了避免或減緩空泡帶來的危害，採用螺旋槳理論設計方法和空泡性能優良的槳葉剖面來增加空泡斗寬度和控制槳葉空泡范圍及空泡類型，以適應非均勻流場中螺旋槳工作的需要。 -
In the first part, firstly, the main dimensions of oar blade and propeller boss and other parameter of varivec propeller are selected. then, a suit of viable mechanism to control the work state of varivec propeller is designed, which is different from the mechanism designed by the japanese. it ' s principle is similar with the cycloid propeller
在機構設計部分，本文首先確定了全方位推進器的槳葉及槳轂的主尺度以及其他的相關的參數，然後設計出一套可行的與擺線推進器工作原理相仿的調距機構用來對全方位推進器的工作狀態進行控制，該機構與日本的全方向推進器的連桿圓盤機構完全不同。 -
In lifting - surface theory, the non - liner phenomena of the trailing vortex in the transition wake area and of the tip vortex separation are considered. in surface panel method hyperboloidal quadrilateral panels are employed and the morino ' s analytical formulation is used to determine the influence coefficients. the more reasonable pressure kutta condition is satisfied at the trailing edge of propeller blade
在計算中，對于升力面理論，本論文考慮了過渡區尾渦收縮和葉梢分離的非線型現象的影響；對于面元法，本論文採用的是計算較為簡便的基於擾動速度勢的基本公式及雙曲面形狀的面元，在槳葉隨邊滿足更趨合理的壓力kutta條件，並用morino導出的解析公式計算面元的影響系數的快速有效的數值預報方法。 -
Through the verification calculations on various types of propeller, the numerical method and computer program presented in this paper can give a satisfied result of open water performance of propeller, unsteady forces, pressure distribution of blade surface
通過對各種類型螺旋槳的校核計算，表明本文提出的計算程序在螺旋槳敞水性能、非定常力、槳葉表面壓力分佈等方面均能取得令人滿意的計算結果。 -
Ustable blade propeller pump
調節葉片螺槳泵
分享友人