波動不穩定流 的英文怎麼說

中文拼音 [bōdòngbùwěndìngliú]
波動不穩定流 英文
oscillating unsteady flow
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 不 : 名詞[書面語] （剁物所用的木墩） a block of wood
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 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...
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. Second, we discuss the influence of environmental referance potential temperture and thermal wind on mesoscale symmetric instability. we find the expression of disturbance stream function and criterion of symmetric instability by analytical method and conclude that change caused by environmental referance potential temperture with height and thermal wind make critical richardson number and disturbance critical half - wave length of symmetric instability larger, that is to say, they benefit the occurance of symmetric instability. third, we study nonlinear perturbation analysis of mesoscale vertical circulation and evolution equation by means of f - plane. non - hydrostatic balance and filiter model

    第二，討論了環境位溫與熱成風因子對中尺度對稱不穩定的影響。運用解析的方法求出了擾動流函數的表達式和對稱不穩定的判據，發現環境參考位溫隨高度的變化與熱成風因子使得對稱不穩定臨界理查遜數及擾動的臨界半波長都變大，這有利於對稱不穩定的發生。第三，採用f平面、非靜力平衡、濾聲波模式，討論了中尺度垂直環流非線性攝動分析及演變方程。
  2. Through the experiment, the following results were given out, whether the system was rolling or not, there were always density oscillation gradients when the two - phase flow instabilities occurred, and the stability of the system was always strengthened with the increasing of the inlet mass flow or the increasing of the inlet subcooling of the test tube

    實驗結果表明，無論是搖擺還是不搖擺，系統發生的不穩定類型中都有密度波型脈動成分，系統的穩定性總是隨流量的增加而增強，隨入口過冷度的增加而增強。
  3. This paper is concerned with, the existence and stability of travelling wave solutions for the viscous balance law which is an extension of viscous conservation law where a reaction term g ( u ) is added. l ) the existence of travelling wave solutions by geometric singular perturbation method, we investigate the existence of travelling waves ( a2 ) connecting a saddle point and a sink point and the existence of viscous shock waves c connecting two adjacent or disadjacent saddle points. by giving a detailed analysis of the fast and slow manifolds and verifying the transversality of the intersection of singular stable and unstable manifolds of the reduced problem along the singular heteroclinic orbit, we obtain the existence of travelling waves ( a2 ) in the case of a convex flow function / and that of viscous shock waves c under the assumption that f " is bounded

    主要結果如下： 1 ）行波的存在性本文利用[ 37 ]中幾何奇異攝動理論，通過仔細分析= 0時的快流、慢流，驗證= 0時慢流方程的穩定與不穩定流形橫截相交於奇異異宿軌道，先在f為凸的條件下嚴格證明了（ ）存在連接不相鄰的鞍點、結點的行波（ a2 ） ；然後在地f有界的條件下得到（ ）存在連接鞍點（包括相鄰和不相鄰）的粘性沖擊波c ，彌補了[ 11 ]缺少嚴格證明的不足，並推廣了[ 11 ]在f為凸的條件下得到的粘性沖擊波的存在性結果。
  4. The bank vulnerability has been matter of concern in the works of economic historian and the institutional school. the classical economists such as marx, marshall, keynes mainly describe and analyze bank crisis from the angle of economic cycle, minsky and kindleberger introduces the behavior factor of microscopic main body into the analysis of bank vulnerability. the development of the game theory and the information economics lay a solid foundation for stiglitz and weiss ' s study about bank vulnerability

    銀行脆弱性問題在經濟史家和制度學派的著作中多有論及，馬克思、馬歇爾、凱恩斯等經典經濟學家主要從經濟周期的角度描述銀行危機的現象和原因，分別重視信用規模不穩定和社會流動性偏好的波動對銀行系統的影響，但馬克思將銀行信用危機看作是經濟危機的結果；明斯基、金德爾伯格引入微觀主體的行為因素對銀行的脆弱性進行分析；博弈論和信息經濟學的發展最終為斯蒂格利茨、韋斯等人對銀行體系脆弱性的研究提供了較為系統、堅實的微觀基礎。
  5. The most vulnerable financial markets, other things being equal, are the medium - sized ones, which have adequate liquidity to attract international capital but which are, unfortunately, small enough for short - term trends to be dictated by large operators looking for short - term gains. there is also the temptation to engage in manipulative behaviour, amplifying volatility and vulnerability to financial instability

    假設其他條件相同，最受威脅的是規模適中的金融市場，它們有足夠的流動性吸引國際資金，但不幸的是市場規模又夠細小，足以令其短期趨勢可以受到圖短利的大戶主導加上操控活動有其吸引之處，市場波動以至金融不穩定的機會更大。
  6. The possible factors including the deviation of temperature in length and breadth of rod, the changes of transfiguration resisting force under the changes of temperature, the adjustment of roll gap, the variation of rolling pressure, the changes of roller speed during dynamic adjusting press, the unmatched of seconds - flux under the dimension fluctuation of the coming sample and so on. the whole system was a closed loop which factors in it interacts each other

    可能的影響因素有:沿軋件縱橫向溫度變化、由溫度引起的軋件變形抗力變化、軋機輥縫值變化、負載變化、電機調節系統由不穩定向穩定過渡過程中軋輥轉速的變化（如咬鋼過程中的動態速降后的回復階段） 、來料尺寸波動造成秒流量不匹配等，整個模擬系統是各個因素相互影響關聯的一個閉環系統。
  7. According to the experimental parameters of mpt, the main performance parameters of different propellants have been given by engineering performance computation under designed and working states, which has great importance for the experimental research and the future work. 2. for helium and argon, the factors which influence on mpt ' s vacuum steady work have been discussed such as the material of microwave tie - in, the distance between the probe and inner - conductor, the position of the inner - conductor, the input power of microwave, the mass flowrate of propellant and the vacuum pressure of environment, and the influence has been discussed of the microwave power and the mass flowrate of propellant on the pressure of the resonance cavity, thrust, reflected power and the temperature of the resonance cavity

    論文的工作和新見解主要包括： 1在設計狀態和工作狀態下，根據mpt的實驗參數，對mpt使用不同工質時的性能進行了工程估算，這對mpt現階段的實驗研究和今後的研究有重要的指導意義； 2對于he 、 ar推進工質，討論微波的接頭材料、探針與內導體的間隙、內導體的位置、微波的輸入功率、工質的質量流量以及環境真空度對mpt真空啟動和穩定工作的影響，並探討微波的輸入功率、工質的質量流量對諧振腔壓強、推力、反射功率以及諧振腔溫度的影響； 3對于n _ 2 、 h _ 2 、 nh _ 3 、 h _ 2o推進工質，主要討論與he 、 ar工質不同的特性，並從長遠的眼光和工程應用的角度，認為其可行性不容置疑，潛在優勢不可忽略，是未來mpt應用的主流推進工質。
  8. Using the two - stream fluid model, the linear dispersion relation is derived assuming a two - dimensional spatial geometry. two cases are considered, one is that the 2d spatial geometry is defined by the plane containing the two counterstreaming electron populations and the perturbation wave vector ( referred as the xy plane ), and the other is that the geometry is defined by the plane being vertical to the two counterstreaming electron populations ( referred as the yz plane )

    對高能束流和電子迴流構成的雙流系統，建立冷等離子體流體模型，採用簡正模分析方法，分別考慮擾動波矢在平行於電流傳播方向的平面（記為xy平面）上和在垂直於電流傳播方向的平面（記為yz平面）上這兩種情況，推導了不穩定性的色散關系。
  9. The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other

    當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時，剪切層對其有選擇放大作用，形成渦環結構，剪切流動中渦環與碰撞壁撞擊，在碰撞區域產生壓力擾動波並向上游反射，在上游剪切層分離處誘發新的擾動的產生，當新擾動與原擾動匹配時，射流上游就被不斷地受到周期性激勵，腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。
  10. This kind of instability bulk movement is induced by wave cyclic loading, as a result the slope of bottom bed decrease, water depth increase, and instability bulk movement has the character of subregion, regularity and head erosion, thus it will influence evolvement of region of interest landform, and change flow field and bottom stratum condition continually, so will lead to dynamic influence on structure foundation soil

    這種不穩定塊體運動由波浪循環荷載誘發，其結果使底床整體坡度減緩，水深加大，而且不穩定的塊體運動具有小區域、多發性和溯源侵蝕的特點，將繼續影響著海域以後的水深地形的發展演化，並不斷改變著該區的流場與底床地層條件，對構築物地基土的穩定性產生著動態的影響。
  11. Abstract : a continuity wave model is put forward for the dispersion processof liquid - liquid two - phase system, by coupling mass and momentum conservation equations of two - fluid model. the conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model. the phenomena of catastrophic inversion and transitional inversion are explained. the effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model. according to the theory herein, emulsion inversion is the regime transition of liquid - liquid system due to the instablity of a dispersion process. the effect of drop size distribution on the maximum volume concentration of a liquid - liquid emulsion only occurs in a certain range of weber numbers

    文摘:以雙流體模型為基礎，通過質量守恆方程和動量守恆方程的耦合，提出了液-液兩相系中彌散傳質的連續波模型.由該模型得到彌散傳質過程阻塞和彌散傳質過程弱不穩定性產生的條件，計算了液滴尺寸及其分佈對乳化液極大堆砌分數的影響，解釋了劇變型乳化逆變和漸變型乳化逆變現象.研究結果表明，乳化逆變是由於彌散傳質過程的不穩定性而引起的懸浮體型態的改變，隨液滴尺寸多分散性的增大，極大堆砌分數增大；隨液滴平均尺寸的增大，多分散性對極大堆砌分數的影響減弱；當韋伯數足夠大時，液滴尺寸及其分佈對乳化液極大堆砌分數無影響
  12. And such zones act as an important dynamic condition for low - level water transfer and also a favorable environmental condition for " seeding - water supply ". there stronger echoes are detected, meaning that bubble convection develops in the precipitating fields of the clouds that are homogeneous in the main, causing centers of > 10 mm / hr surface rainfall to occur and migrate

    這些不穩定區是低層水汽輸送摘要重要的動力條件，也是「播撒一供應」機制發生的有利的濕熱力環境條件，雲系較強降水回波在這里得到發展，使整體均勻的冷鋒層狀雲系降水場有較強回波帶和對流泡發展，帶來地面有> 10mmlh較強降雨中心產生和移動。
  13. Finally, compared with the 2d result, the synthetic jet that 3d numerical simulated has a definite direction. the 3d result, however, has a much smaller fluctuation owing to the span - wise instability which created a breakup of coherent vertical structure into smaller scales, it therefore compares more favorably with the measured data in tests

    三、三維模擬結果顯示合成射流的方向性極佳，與二維模擬相比較，三維數值模擬的速度波動較二維模擬要小，旋渦的相干結構衰弱，這是因為三維模擬考慮了流動的橫向不穩定性，這更加接近實際情況。
  14. Furthermore, we employ iteration and predictor - corrector - approach to solve the nonlinear equations in order to implement the marching procedure. we investigate detailedly the process of the c - type instability for nonparallel boundary layers with three - dimensional disturbances. by investigating the nonparallel boundary layers of three - dimensional body, we

    文中通過對三維物體的非平行邊界層穩定性的研究，確定最不穩定波的擾動參數和最易失穩的流向、展向位置;對三維擾動的非平行非線性邊界層穩定性的研究，得到更精確的擾動放大因子值。
  15. On the basis of the primary studies upon the nonlinear interactions between the unstable waves and the self - excited oscillations in the flow, experiments were focused upon the attenuation effects on the oscillations of tripping wires, side jets and deflected plates, and upon the mechanisms for the attenuations

    在對流動的不穩定波之間非線性相互作用過程和自激振蕩的基本規律研究的基礎上，實驗研究了絆線、旁射流和折板削弱自激振蕩的效果與機制。
  16. Financial instability hypothesis differs from the mainstream economics in the aspects of whether capitalist economies rely on exogenous or endogenous shocks to generate business cycle and whether it is right for governments to interfere in economic activities and the relationship between finance and economic circles

    在經濟波動的內生與外生方面、政府是否應干預經濟方面、金融與經濟周期的關系方面，金融不穩定假說與主流經濟學存在著不同的觀點。
  17. We analyzed the meso - scale disturbance field and found that the development and spread of inertia - gravity wave had a close relationship with the development and spread of the rain belt. at the initial stages of precipitation, convection instability was strong in the low level above rain region. convection instability could inspire inertia - gravity wave

    對中尺度擾動場分析發現重力慣性波的發展和傳播與雨帶的發展與傳播有密切的聯系：在降水初期，雨區上空低層的對流不穩定較強，對流不穩定可激發出重力慣性波。
  18. But it does take care of financial instability associated with volatile capital flows and the associated large swings in real exchange rates

    ，但貨幣聯盟仍能處理資金流向波動及實質匯率相關的大起大落所引起的金融不穩定。
  19. Sharp exchange rate movements could be a destabilising force for emerging markets, as we have learnt in the past few years

    根據我們過去幾年的經驗，這些大規模資金流動觸發的匯率波動，可能會對新興市場帶來不穩定的因素。
  20. Install a needle valve in the control line. if uneven pressure should cause the regulator to pulsate, its action can be stabilized by throttling the valve

    在控制管線上安裝一個針形閥。如果不穩定的壓力導致調節閥波動，則這種波動通過對閥門節流將穩定下來。
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