meridional flow 中文意思是什麼

meridional flow 解釋
經向流
  • meridional : adj. 1. 子午圈[線]的；最高的，全盛的。2. 南歐（人）的，法國南部人的；南方的。n. 南歐人，（尤指）法國南部人。
  • flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
  1. Using an ideal two - dimensional mhd model, this paper investigates the evolution of a pure flow velocity enhancement disturbance in the solar wind in the heliospheric equatorial plane ( 2 - d, 2 - component model ) and the heliospheric meridional plane ( 2 - d, 3 - component model )

    摘要採用二維理想mhd模型，分別在日球赤道面（二維二分量模型）和日球子午面（二維三分量模型）內研究太陽風中純速度增幅擾動的演化。
  2. In the thesis, the design method of the diagonal flow fan impeller has detailedly researched different from the previous means borrowing and extending design methods for axial flow or centrifugal type, a complete design method has presented on the basis of quasi - three dimensional design idea. the course is mainly composed of such steps as meridional surface design, inverse problem computation in meridional surface, blade shaping on stream surface, and verifying through three dimensional computation, until the design requirement is met at last

    不同於以往的軸流式或離心式延長設計方法或經驗方法，本文按照準三元設計的思路給出了一套完整的設計方法，即子午面設計?子午面反問題計算?斜流流面上葉片造型?三維計算驗證優化，直至符合設計目標。
  3. All these results confirm the important of wind in meridional circulation and heat transport. based on mom2 model, a rectangular basin model with ideal w ind stress and other ideal conditions is designed to study the main processes and dynamical mechanism in setting the depth of cross - equator flow. the effects of horizontal diffusivity, seasonal variations of

    我們還通過全球海洋環流模式，進一步證實了風應力的季節變化在北印度洋熱收支、 sst以及海洋環流變化中的作用:即包含風應力的季節變化將使長期平均的sst降低，海面凈熱通量增加。
  4. Its interannual variation ' s main period is about 4 ~ 5a and the 7 ~ 8a ' s period exist too ; the interdecadal variation ' s main period of the australian high is about 15a. the interannual variation of australian high ( aah ) has correct correlation with antarctic oscillation and enso, and the enso ' s 4a period has the most important influence on the aah. ( 2 ) when the ah becomes stronger, the members of the whole aamcs are stronger following it. that is to say, in the years that the ah is stronger ( compared to the weak years of ah ) and on the horizontal circulation, the members of aamcs, including the ah, the cross - equator flow ( cef ) between 100 and 160 e, the south china sea south - west monsoom ( ssm ), the south sea monsoon rough, the tropical easily flow, subtropical high ( sh ), the mei - yu front, the mid - latitude effect, become stronger, and their positions are more southward ; in the meridional - right circulation, there are five circulations including classic monsoon meridional - cirle circulation and hadley circulation that become stronger in the strong years of ah than in the weak years of ah

    本文採用ncep ncar再分析月平均的全球海平面氣壓場、高度場、海表溫度場、高雲量和cmap全球降水資料，以及中國160站逐月降水資料，分析了1948 2002年期間澳大利亞高壓（以下簡稱澳高）的年際和年代際變化以及澳高年際變化對亞澳季風環流系統的影響，結果顯示： （ 1 ）澳高存在明顯的年際和年代際變化，澳高年際變化以4 5年的周期變化為主，同時兼有7 8年左右的周期，而澳高的年代際變化則以15年左右的周期變化為主：澳高年際變化同時與南極濤動和enso有正相關，並且enso的4年左右的周期變化對澳高年際變化影響最大。
  5. A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function

    把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。
  6. Detailed numerical simulation of krain impeller at design operating condition is made, the computed results, such as circumferentially averaged shroud static pressure distribution, meridional velocity and relative flow angel et al., show good agreement with experimental data

    對krain高速離心葉輪在設計工況下的內部流場進行了詳細的數值模擬，計算所得輪蓋壓力分佈、子午速度及相對氣流角分佈與實驗結果吻合較好，並且進一步加深了對二次流機理的認識。
  7. The work of this thesis is financially supported by the aero fund project. the main purpose is to study the aerodynamics design technology of counter - turbine, to find the question differing from the aerodynamics design of general turbine, and to provide theoretical basis for development of aeroengine. first, the design method for the counter - turbine meridional flow is developed in the present thesis, and one 1 + 1 type counter - turbine is designed using this method

    本論文的工作來源於航空科學基金項目，主要是研究對轉渦輪的氣動設計方法，並通過對對轉渦輪的氣動設計與分析，搞清對轉渦輪設計的關鍵問題、發現區別于常規渦輪設計的特殊性，為今後先進軍用戰斗機發動機燃氣渦輪設計與研製奠定理論基礎。
  8. With this program, the blade suit for flow parameters that was obtained from the meridional - flow program is designed. finally, the flow field of the cascade of the counter - turbine is simulated using the cfd program. the cfd program is based on the jameson cell - centered finite volume method

    最後對所設計出的對轉渦輪平面葉柵內部流場進行了初步數值計算，採用的計算格式為jamescn的具有二階精度的runge ? kutta四步顯式有限體積法，結合時間推進求解euler方程。
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