氣流中的擾動 的英文怎麼說

中文拼音 [qìliúzhōngderǎodòng]
氣流中的擾動 英文
imperfections in flows
  • 氣 : Ⅰ名詞1 （氣體） gas 2 （空氣） air 3 （氣息） breath 4 （自然界冷熱陰晴等現象） weather 5 （氣味...
  • 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...
  • 的 : 4次方是 The fourth power of 2 is direction
  • 擾 : Ⅰ動詞1 （擾亂; 攪擾） harass; trouble 2 （客套話 因受人款待而表示客氣） trespass on sb s hospital...
  • 氣流 : 1 [氣象學] air current; airflow; wind current; airstream2 [語言學] breath氣流紡紗 open end spinni...
  • 擾動 : excitation; turbulent motion; turbulence; destabilization; [物理學] perturbation motion; [地質學]...
  1. According to their space position, the seismic features of shallow gas in this region can be divided into three groups : ( 1 ) features in the stratum : acoustic blanket, acoustic curtains, acoustic turbidity, irregular strong top reflection boundary, and phase pull - down in both flanks ; ( 2 ) features of the seabed : seabed pockmark and giant sunken pit ; ( 3 ) features in the seawater column : acoustic plumes, cloudy turbidity and point - line - type reflection

    該區的淺層氣地震特徵按空間位置分為3大類： （ 1 ）地層中的特徵：聲學空白、聲學幕、聲學擾動、不規則強反射頂界面、兩側相位下拉； （ 2 ）海底面的特徵：海底麻坑、大型塌陷坑； （ 3 ）海水層中的特徵：聲學羽流、雲狀擾動、點劃線反射。
  2. Firstly, a representative wind and wave model, which could both simulate the main characteristics of wig over sea waves and be suitable for numerical calculation, is presented. the model completely considers the fully nonlinear effect of wave surface on the wavy air flow, separates the disturbance of wave surface from the wing - air wave interaction flow, and overcomes the numerical calculation difficulties due to the large difference of dimensions between wing and water waves

    首先針對機翼在風浪中的非定常非線性氣動力問題，提出了一個既能夠反映風浪場主要特徵又適合於數值計算的風浪場模型，該模型完整地考慮了波浪表面對氣流場的全非線性影響，使波面對流場的擾動分離出來，消除了機翼和波浪幾何尺度上的巨大差異帶來的數值計算上的困難。
  3. It is studied that the formation mechanism of taylor bubble and its control method in gas - liquid two - phase flow, which affects the pressure balance and mechanical driving efficiency in the flow of petroleum engineering. experiments show that the formation of taylor bubble in gas - liquid two - phase flow is due to the intensive congregation and amalgamation of small bubbles driven by void fraction waves and that the highly turbulent flow is able to restrain this formation. thus, the flow regime transition may be checked by increasing the flow turbulence and controlling the disturbed frequency

    對大管徑氣-液兩相流動中嚴重影響壓力平衡與機械驅動效率的段塞流生成機制和控制方法進行了研究，實驗證明段塞流的形成是由於空隙率波的大幅度增長使氣泡高度集中，並形成聚並所致。強湍流運動可以抑制taylor泡的形成。因此，通過強化湍流或控制擾動頻率可以對氣泡聚並起明顯的抑制作用。
  4. It is necessary to study the unsteady nonlinear aerodynamic characteristics of a wig flying in air with disturbed waves for the design of high - performance wig vehicle, especially for the subject that how to improve the safety, maneuver ability near sea wave, and economics of the wig flying over sea waves

    研究地效翼在風浪擾動氣流場中掠海飛行的非定常氣動力問題，對于高性能地效翼船的設計，特別是對于提高地效翼船在風浪中飛行的安全性，操縱性以及經濟性都是十分重要的。
  5. The flight control system of attack helicopter and the influence of disturbance during noe flight are studied in this dissertation. and the use of h robust control and dynamic inversion schemes in flight control system are discussed

    本文主要對貼地飛行時武裝直升機的飛行控制系統進行深入的研究和探索，討論了貼地飛行時氣流擾動對直升機系統的影響，研究了h _魯棒控制和動態逆控制在直升機飛控系統中的應用。
  6. The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model

    非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明： 「開關」變量保持與基態一致，所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似，伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向；郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度； 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。
  7. The flow propagates northward and marches across the equation, then passes through the trough of summer monsoon over south china sea and finally gets to the yangtze river valley, which sequentially effect the southwest airflow of the west side of subtropical high

    （ 3 ）在副高西伸過程中，南半球澳大利亞高壓北側的冷空氣向北推進，經向風擾動持續向北傳播，從而影響副高西側的偏南氣流。
  8. From time to time, under the influence of upper air disturbances, cold air from this anticyclone plunges southward through china and brings outbursts of cold air to the south china coastal areas

    有時，在高空擾動氣流影響下，冷空氣會南下橫過中國。這些冬季季候風寒潮，最後為華南沿岸帶來一陣陣的冷空氣。
  9. The paper introduces the basic principle of the inducement type ventilation in the province of aerodynamics : disturbed characteristic of high - speed cascade can effectively leads quiescent air around it and drive air flow, compares and analyzes the traditional ventilation type and inducement ventilation type applied in underground garage in the facets of airflow organization, practicability and economy, coming to the conclusion that the inducement type ventilation is applied to the underground garage in the facets of economy, practicality and high efficiency

    摘要介紹了誘導式通風利用空氣動力學中高速噴流的擾動特性，能夠有效地誘導周圍靜止的空氣，帶動空氣流通的基本工作原理，就傳統通風方式和誘導通風方式，在地下車庫應用中的氣流組織、實用性、經濟性等幾個方面做了比較，分析認為，誘導式通風因其經濟、適用、高效的特性適合在地下車庫應用。
  10. Under the influence of the submergence the turbulence intensity are quite high at the end stage of burning. however, the turbulence intensity decreases obviously at the medium stage and the preliminary stage of burning because the flow disturbance is eliminated by the mixture of injection flow and main flow

    受噴管潛入的影響，結束時刻流場的湍流脈動非常強烈，而中間時刻和初始時刻，由於加質流與主流的強迫混合可以消除氣流擾動向下游的傳播和擴展，流場的湍流脈動明顯減弱。
  11. Based on the potential theory, linear and fully nonlinear aerodynamic forces and motions of a wing flying above sea - waves are studied numerically. and the effects of the characteristic parameters of wing and sea waves on the aerodynamic forces are acting on the wig are analyzed systematically in this thesis

    本文基於勢流理論計算研究了二維和三維機翼在風浪擾動中的線性和全非線性氣動力及其運動響應，全面分析了機翼和波浪的特徵參數對氣動力的影響，得出了很多有意義的結果。
  12. All kinds of natural and human factors, including climate, organism, landform, m other rock and material, and human disturbance, influenced the genesis and devel opment of soils in shunde ecological paradise, guangdong province

    廣東省順德生態樂園內的土壤形成發育受氣候、生物、地形地貌、母質母巖和人為干擾等5大因素的影響，其中人為活動是導致土層結構破壞和水土流失的主要原因。
  13. Abstract : all kinds of natural and human factors, including climate, organism, landform, m other rock and material, and human disturbance, influenced the genesis and devel opment of soils in shunde ecological paradise, guangdong province

    文摘:廣東省順德生態樂園內的土壤形成發育受氣候、生物、地形地貌、母質母巖和人為干擾等5大因素的影響，其中人為活動是導致土層結構破壞和水土流失的主要原因。
  14. Then the traditional pd controller and gain - scheduling fuzzy pd controller were designed to realize path following of parafoil system. simultaneously, several control strategies were brought forward in view of the basic flight properties of parafoil system. the important one was described as following : the

    同時，基於翼傘系統基本運動特性，提出了一系列有針對性的控制策略，其中重要的一條是，將平均風的影響在軌跡歸航中修正，而大氣紊流的影響作為干擾由控制器來補償。
  15. The unstructured meshes of the global flowfield are made. 3. the program to solve the six - freedom - of - degree dynamics equation and the kinematics equation of the missile are worked out

    由於非均勻流場的氣動力干擾作用，其氣動力與外掛物單獨飛行時有較大的不同，獲取分離過程中的氣動力數據是解決這一問題的關鍵和難點。
  16. Abstract : concerning the models for discribing aerodynamic stability of axial flow compressor, the original model is one - dimensional, and it is reasonable for the onset of surge only. for the onset of rotating stall, there are just some two - dimensional models at published literatures. a three - dimensional aerodynamic of compressor has been presented in this paper. an aerodynamic stability model concerning radial disturbance of compressor is presented. the calculated results show that the occurrence of radial disturbance is related to the axial velocity disturbance, which has important effect on aerodynamic stability of compressor. the position of onset of stall, in blade tip or hub, is dependent upon the characteristics of blade element. the comparisons of calculated results predicted by 2d and 3d aerodynamic stability model have also been made in this paper

    文摘:軸流壓氣機的氣動穩定性模型，最初為一維模型，僅適用於描述喘振發作.對于旋轉失速發作，在公開文獻中有一些二維模型發表.本文提出了一類考慮壓氣機徑向擾動對失速影響的新的氣動穩定性模型.計算結果表明壓氣機的軸向擾動往往隨著徑向擾動的產生，徑向擾動的強度影響壓氣機的氣動穩定性，在葉尖還是葉根首先產生失速與壓氣機基元葉柵特性密切相關.本文對軸流壓氣機二維和三維氣動穩定性模型的計算結果進行了對比分析
  17. Concerning the models for discribing aerodynamic stability of axial flow compressor, the original model is one - dimensional, and it is reasonable for the onset of surge only. for the onset of rotating stall, there are just some two - dimensional models at published literatures. a three - dimensional aerodynamic of compressor has been presented in this paper. an aerodynamic stability model concerning radial disturbance of compressor is presented. the calculated results show that the occurrence of radial disturbance is related to the axial velocity disturbance, which has important effect on aerodynamic stability of compressor. the position of onset of stall, in blade tip or hub, is dependent upon the characteristics of blade element. the comparisons of calculated results predicted by 2d and 3d aerodynamic stability model have also been made in this paper

    軸流壓氣機的氣動穩定性模型，最初為一維模型，僅適用於描述喘振發作.對于旋轉失速發作，在公開文獻中有一些二維模型發表.本文提出了一類考慮壓氣機徑向擾動對失速影響的新的氣動穩定性模型.計算結果表明壓氣機的軸向擾動往往隨著徑向擾動的產生，徑向擾動的強度影響壓氣機的氣動穩定性，在葉尖還是葉根首先產生失速與壓氣機基元葉柵特性密切相關.本文對軸流壓氣機二維和三維氣動穩定性模型的計算結果進行了對比分析
  18. Because it is very turbulent inside a cumulonimbus cloud, the water droplets and ice crystals in it will break up and become electrically charged

    由於積雨雲內有急劇的氣流擾動，雲中的水珠和冰粒便會分裂而產生電荷。
分享友人
分享到 Line

分享到臉書