渦流方程 的英文怎麼說

中文拼音 [guōliúfāngchéng]
渦流方程 英文
vortex equation
  • 渦 : 渦名詞1. （漩渦） eddy; whirlpool; vortex 2. （酒窩） dimple
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 程 : 名詞1 （規章; 法式） rule; regulation 2 （進度; 程序） order; procedure 3 （路途; 一段路） journe...
  1. By comparing the dry plate pressures drop and distributions of velocities simulated on single valve with those of double valves, it was found that there was intense turbulence in the flow fields around fixed - valve, there were eddy areas between valve side orifices and tray wall, there were eddies above the valves too, these led to the complex behaviors of gas perforating valve, these had a great effect on the gas - liquid mass transfer process. at the same time, in order to prevent the disadvantageous effect of gas between one valve with another on the gas - liquid mass transfer, it was very effective to change the fields of gas perforating valve by folding the edges of valve

    通過對數值模擬得出的單閥和雙閥塔板的干板壓降及流場速度分佈分析對比后發現，固定閥周圍流場存在較強的湍動，閥側孔與塔板壁面區域以及閥體的上方空間存在明顯的渦流區，使氣體穿閥后的行為變得復雜，並對氣液傳質過程產生重大影響；模擬結果表明，為防止和削弱固定閥間的對沖造成的「死區」對傳質帶來的不利影響，通過折邊來改變氣體的氣路是非常有效的，模擬值與實驗值基本得到吻合。
  2. 2. dynamic meteorology : equations of motion ; geostrophic, ageostrophic and gradient winds ; thickness and thermal wind ; continuity equation ; stream function ; vorticity equation ; divergence equation ; omega equation ; rossby wave ; ekman layer ; numerical weather prediction

    2 .動力氣象學：運動方程地轉風非地轉風及梯度風厚度及熱成風連續方程流函數渦度方程輻散方程奧米茄方程羅斯貝波埃克曼層數值天氣預報。
  3. Based on researching the shaft bearing replacer, this paper built the models of electromagnetic field and vortex density in bearing race snap being induction heating

    摘要在研究軸承內環感應拆裝的基礎上，建立了感應加熱過程中工件內電磁場和渦流分佈的基本方程。
  4. By performing fourier transformation, the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size, specific gravity, velocity gradient, and the characteristic frequency of energy - containing eddies are four basic influencing parameters. it is proven theoretically that under certain conditions, the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid. based on the equations of two - phase flow, the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water

    通過對細小顆粒在剪切流場中運動方程的fourier分析，得到了顆粒脈動強度和流體脈動強度之間的定量關系，表明顆粒粒徑、顆粒密度、流速梯度以及紊動場含能旋渦的特徵頻率是影響顆粒脈動強度的主要因素，首次從理論上證明了在一定條件下，顆粒在縱、垂向的脈動強度均會超過相應的流體脈動強度，為已有的實測資料提供了合理的解釋。
  5. Finally, the mechanisms behind the instability of fibre suspensions are presented from a point of view of vorticity. effects of fibres are investigated through equations of vorticity transport and enstrophy balance

    從渦量的角度分析纖維改變懸浮流動穩定性的機理，利用渦量輸運方程與渦能平衡方程分析纖維的作用。
  6. In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data

    本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好
  7. 5. according to the requirement of amt start up experiment, using dynamic link library to program for different kinds of data acquisition card and transferring data between pc and multi scm. in this way data can be acquired successfully and engine throttle 、 clutch locking speed and eddycurrent dynamometer torque were controlled by pc programs

    根據試驗要求，採用動態鏈接庫的方法對不同數據採集卡進行混合編程，順利地採集參數和控制發動機節氣門開度及離合器結合速度，利用上下位機多機通信，使上位機控制電渦流測功機，實現了模擬加載。
  8. To the large - scale atmosphere, we separate the terms of the horizontal vorticity converting into the vertical vorticity, which considered as the baroclinic terms, from the terms that not including horizontal vorticity by the rules of the p coordinate transforming to the z coordinate in the traditional vorticity equation, and carry out the scale analysis, and then conclude that the baroclinic terms are able to reach the same magnitude grade as the partial derivative of the vertical vorticity to time when it takes place the large scale precipitation in the summer monsoon period in china. by analyzing the game reanalysis data from april to august in 1998 in the region of chinese continent, we found that the baroclinic terms is important to the large - scale cyclone developing above the 600hpa, and the magnitude changing of the baroclinic terms is nearly in - phase as the monsoon movement, so which imply exactly that the magnitude changing of the baroclinic terms is the one of the natural characters of the summer monsoon evolution and equivalent to the movement rule of the subtropical high of the western pacific

    在p坐標垂直渦度方程中，利用p坐標向z坐標轉換的公式將水平渦度向垂直渦度轉化的所有項分離出來，這些項具有明顯的斜壓特徵，對其進行尺度分析后，得出在可以忽略潛熱釋放對渦度影響的對流層中、高層，此轉化項是大尺度斜壓渦度發展的重要項。通過對1998年48月的game再分析資料進行實際計算也發現，轉化項在東亞夏季風上升支的600hpa及以上層次對垂直渦度的局地變化貢獻很大，不能忽略。同時發現水平渦度向垂直渦度的轉化在南海季風爆發時和江淮梅雨入梅及發展過程中均有指示性意義，在南海季風爆發以後，在中國東南部地區，轉化項的大小與夏季風的活躍和中斷等活動有著幾乎一致的變化規律，這從側面也指出了，此轉化項的變化是夏季風演變所具有的本質特徵，並且它反映出了西太平洋副高在中國大陸的活動情況。
  9. This paper, firstly, introduces some basic nondestructive tests, shows the background of the subject about the test for the defect of sucker rod, by comparing with the other nondestructive tests, proves the advantage of eddy - current test, then beginning with maxwell equation in electromagnetic field theory and combining with the idea model of defect, this paper proves that the feasibility of eddy - current test technology in multi - parameter and multi - frequency which applied in the test for for the defect of sucker rod

    本文首先介紹了無損檢測技術的幾種典型方法，並給出了抽油桿裂紋檢測這個課題的背景，通過同其它幾種無損檢測技術的比較，給出了電渦流技術的優越性。然後從電磁場理論中的麥克斯韋方程出發，結合裂紋的理想模型，從理論上證明了電渦流多頻率多參數檢測技術在抽油桿裂紋檢測中的可行性。
  10. According to the definition of stream function and vorticity, this article theoretically derives a formulation of definite solution problems for resolving two dimensional flow, which is different from the usual formulation, from the stream function - vorticity n - s equation

    摘要從定常二維平面流動的流函數渦量型n - s方程出發，從理論上推導出一種不同於通常提法的二維平面流動的定解提法。
  11. For the present two les models, adopting the subgrid eddy viscosity concept and introducing the transport equation of turbulence energy k, the subgrid scale turbulence is parameterized by the turbulence energy k and the length scale of turbulence / ( k - 1 model ). in addition, vegetation is considered as an internal source of resistant force and turbulence energy

    在應用大渦模擬方法求解數值計算模型控制方程時，亞網格雷諾應力項沿用了亞網格渦粘性系數思路，引入亞網格紊流脈動動能k的輸運方程，建立了關于亞網格紊流脈動動能k和紊流特徵長度l的k - l模型求解。
  12. In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation

    本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。
  13. In this paper, the contents and the methods of the impacting test to the particle separator vortex blades by the foreign object are introduced, the ultra dynamic strain device is used to carry on the measure of this experiment and obtained the strain - time history, three dimensional coordinate measuring method is used to measure the remaining distortion of the vortex blade, and the high speed photographic apparatus is used to carry on the photography of the impacting experiment

    本文介紹了對粒子分離器渦流葉片進行外物撞擊試驗的內容和方法，採用超動態應變儀對外物撞擊試驗進行了測量，獲得了渦流葉片不同外物撞擊下的應變-時間歷程，採用三坐標法測量了外物撞擊后渦流葉片的殘余變形，並採用高速攝影儀對外物撞擊渦流葉片的全過程進行了拍攝。
  14. In this article, constituting some the equations which reflect the flow law and building and applying many mathematical models of physical and chemical reactions in the the plasma ignition : applying k - two equations turbulence model to calculate the turbulence parameter supplying simplied reaction systerm model and applying eddy break - up model and p - i thermal radiation model. with these reasonable simplied modles, numerically simulating the flow field in the plasma ignition. during the numerical simulation, applying the body - fitted coordinates for the complex geometry of the computional field ; using the mixing format to disperse the equations ; applying simplec algorithm method to solve the equations ; using above models and methods, it can get flow field distribution ; including temperature, pressure, turbulent kinetic energy and its dissipation rate, turbulent viscosity, velocity, density. these results are significant to design and improve the plasma ignition

    本文旨在通過構造反映等離子點火器內部流動規律的基本方程組，建立描述等離子點火器內部的復雜物理化學過程機制數學模型：模擬等離子發生器內部燃燒的-雙方程湍流流動模型；模擬氣體燃料在燃燒時中化學反應的簡單化學反應系統模型；模擬等離子點火器內部湍流預混燃燒的漩渦破碎模型；模擬等離子點火器高溫燃氣及其壁面的p - i輻射換熱的模型等等，對模型進行一定的合理的簡化，然後數值模擬等離子點火器內部流場的流動。
  15. Then numerical experiments on forcing dissipation and heating response of dipole ( unipole ) are carried out using global spectral model of quasi - geostrophic barotropic vorticity equation. for every experiment model integration is run for 90 days on the condition of three waves quasi - resonance. the results are given as follows : ( 1 ) under the effects of basic flow intensity and dipole ( unipole ) forcing source, there exist strong interaction among the three planetary waves, and there also exist quasi - two - week and intra - seasonal oscillation of the three planetary waves

    然後，用數值試驗的方法，應用強迫耗散準地轉正壓渦度方程的全球譜模式，並在方程中考慮了偶（單）極子的熱力強迫作用，在三個行星波準共振的條件下，模式共積分90d ，得出： （ 1 ）在基本氣流強度和偶（單）極強迫熱源的共同作用下，三個行星波之間存在很強的波?波相互作用，且波動振蕩呈現準雙周和季節內振蕩。
  16. Motion equation of single particle in flow field of turbomachines

    渦輪機械流場中單顆粒的運動方程
  17. Finally, the wave equation of the electromagnetic field of this kind damper is derived from the maxwell ' s equation. the magnetic flux density at the boundary is assumed to be harmonic, so the analytical result of the wave equation is solved. when the rotor rotates, eddy currents flowing inside the conducting material field are caused

    最後，應用ahrens的電磁軸承簡化模型，從maxwell方程出發推導了應用於本文所述的被動式電磁阻尼器的波動方程，並用傅立葉級數把矩形磁場展開的諧變磁場作為磁場的邊界條件，通過求解波動方程得到磁場的解析解，從而計算了阻尼器對轉子的電磁力和由渦流引起的切向力產生的阻尼器附加功耗。
  18. The mathematical model of non - linear transient magnetic field excited by voltage source is established in this paper. it coupled with electric circuit equation and mechanical motion equation, could solve the transient problem excited by voltage source, and the effect of the eddy currents, non - linearity in magnetic materials and mechanical motion of medium is taken into account

    文中建立了電壓源激磁下的非線性瞬態磁場的數學模型，通過把瞬態磁場方程、電路方程及機械運動方程耦合在一起，得出求解電壓源激磁下，考慮鐵磁材料的非線性、導電媒質的渦流及媒質機械運動等條件下的瞬態過程問題。
  19. Therefore, it is important to know about the damage rule of particle separator, to analyze the degree of blade distortion by means of tests and calculations, to propose a set of vortex blade anti - impact ability appraisal methods

    因此，了解外物對渦流葉片的損傷規律，通過試驗和計算手段來分析葉片變形、產生裂紋或缺損的大小和程度，提出一套渦流葉片抗外物損傷能力的評估方法，對于粒子分離器的抗外物損傷設計是非常有必要的。
  20. 2 an f - plane quasi - geostrophic barotropic vorticity equation model of high resolution is designed in this paper in order to investigate the characters of vorticity propagation and the effect of nonlinearity on the propagation within a typhoon circulation, wherein two mesoscale vortices coexist at different radial positions

    2設計了一個高解析度的f平面的準地轉正壓渦度方程模式，用以研究兩個徑向距離不等的中尺度渦旋共存條件下，臺風環流內渦量傳播的特徵，以及非線性在此傳播過程中的作用。
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