轉捩流動 的英文怎麼說

中文拼音 [zhuǎnlièliúdòng]
轉捩流動 英文
transitional flow
  • 轉 : 轉構詞成分。
  • 捩 : 動詞（扭轉） twist; turn
  • 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...
  • 流動 : 1. （液體或氣體移動） flow; run; circulate 2. （經常變換位置） going from place to place; on the move; mobile
  1. The growth rate of inflectional instability and viscous instability also saturate similarly to the primary and nonlinearly generated disturbances. the main effect of inflectional instability mode in the final breakdown seems to interact with the disturbances having developed and thus widens the frequency spectrum to turbulent state

    屬于拐點不穩定性的高頻二次不穩定模態對最後轉捩的影響主要體現在與其它擾動的相互作用，並導致出現紊流狀態寬帶頻譜。
  2. In the thesis the low drag - low noise optimization of the vehicle main form design is realized, main accomplishments are as follows. researched the knowledge of drag and flow noise, the parameters of the boundary layer are calculated by the hess - smith method and boundary layer momentum integral method. the calculation of the length of transition zone and change in boundary layer displacement thickness between laminar and turbulent states in the transition is improved, then the drag coefficient and self - noise from the transition zone are calculated as the objective functions of the optimization

    主要研究內容和成果如下：對航行器繞流流場進行分析，深入研究了阻力和流噪聲產生機理，建立了阻力系數和自噪聲的評估數值計算模型；採用物面分佈源匯法和邊界層動量積分法對繞流流場的流體動力參數進行計算，改進了轉捩區長度和邊界層位移厚度的計算，應用於航行器頭部駐點自噪聲的計算；最後設計了阻力系數和自噪聲數值計算程序模塊。
  3. When increase the amplitude of the weak psb disturbance, slug structure is formed in pipe flow firstly, this is the first transition

    當加大psb弱擾動的幅值后，流動中首先出現塞流結構，即第一次轉捩。
  4. The result of the flow experiment shows that the critical re number ( from laminar to turbulence ) decreased when the diameter of the tube becomes smaller

    流動實驗結果表明，層流向湍流轉捩的臨界雷諾數隨管徑減小而減小。
  5. Abstract : in this paper, a principle and method of the speed pulse waveform sampling are introduced. its object is to study an effect of the turning factor on torbulence. test is done in the aerofoil fengwen. on design of the user interface, application of the timer and displaying way of a pape and continuity are specifically discussed. expermental results and analysis is showed at the last

    文摘:以翼型風洞為對象，著重介紹了變湍流度對翼型轉捩因子影響的速度脈動波形採集的原理和方法，重點對波形採集系統用戶界面的設計、定時器的應用、分頁顯示和連續顯示等技術進行了具體介紹，並給出了實驗結果及分析。
  6. In view of the fact that the power of the nano technology and its many potential application in thermal science, the thesis mainly discussed the potential application of the nano technology in micro scale heat transfer, the stability of the nano particle suspension. experimental facility was designed and built up to study flow and heat transfer performance of cuo nano particle suspension and water in mini tubes

    鑒于納米技術表現出的強大生命力和在熱科學領域中潛在的廣闊應用前景，本文探討了納米懸浮液的穩定性，設計和建立了實驗系統，實驗研究了細圓管內氧化銅納米顆粒懸浮液流動及換熱特性，包括流動阻力特性，流動的轉捩和換熱特性。
  7. While slug structure is leaving from computing domain, the successive disturbance develop in downstream direction, the legs of hair - pin vortex approach the wall continuously and induce vortex structures near the wall. the evolution of this near - wall vortex structures brings the secondary transition to turbulence in the pipe flow

    隨著塞流結構流出計算域，后繼擾動向下游繼續發展，表現為發卡渦的渦腳向壁面不斷貼近，進而誘發近壁渦結構，近壁渦結構的進一步演化促使圓管流動出現二次轉捩，發展到了湍流階段。
  8. Low - dimensional modeling and numerical simulation of transition in simple shear flows

    簡單剪切流動中轉捩的低維模式與數值模擬
  9. An experimental investigation on the transition in the boundary layer of horizontal plane with and without single two - dimensional roughness elements has been carried out in the wind tunnel. the distribution in normal and stream - wise directions of intensity of t - s wave excited by vibrating beam was measured in every condition. neutral curves were obtained by measuring the growth of the t - s wave at the normal critical location along the stream - wise direction

    在風洞中對水平光滑平板以及加有粗糙元平板的邊界層轉捩進行了測量與研究，比較了不同情況下平板邊界層內由振動梁激勵生成的t - s波沿流向和法向強度的分佈規律，得到了相應的振型增長曲線以及中性曲線。
  10. All of the results indicated the turbulent boundary layer had been turned into the laminar layer. the skin friction coefficient drops rapidly. this result not only proved the phenomenon of reverse transition had occurred, but also showed that this condition was drag - reducing condition

    實驗結果表明板面附近的流動已由湍流流動轉變為層流流動，同時平板表面的摩擦系數較沒有溫度梯度時有大幅度下降，不僅證明了邊界層逆轉捩現象的存在，也說明了這種條件起到了減阻的效果。
  11. All of these results described the process of the phenomenon and delineated the mechanism of it. the experiment was performed in two conditions : heated plane and unheated plane

    這些參數體現了邊界層逆轉捩過程中流動特性的變化規律，揭示了密度分層結構中逆轉捩現象發生的機制。
  12. Based on these parameters, the present work studies the transition of pipe flow with the different amplitude of psb disturbance. the present work simulates the whole time - space process of the transition from laminar to turbulence and secondary transition phenomenon in pipe flow for the first time. the main structure in pipe flow transition is hair - pin vortex ; the evolution of hair - pin vortex is related with the transition of pipe flow

    在這一組參數下，本文研究了不同擾動幅值的psb擾動作用下圓管流動的轉捩過程，首次給出圓管流動從層流轉捩到湍流的時空演化全過程，發現了圓管流動的二次轉捩現象，並進一步揭示了發卡渦是圓管流動轉捩中的主要結構，流動的轉捩過程與發卡渦的演化直接相關。
  13. Two - dimensional compressible linear stability theory was discussed, and principle works were focused in predicting the transition of two - dimensional compressible flow, which based on numerical calculation of stability

    本文主要工作是在對二維可壓縮流動的穩定性數值計算的分析基礎上進行轉捩點位置的判定。
  14. The transition to the turbulent flow happened when the reynolds numbers ( based on the height of mini - channel ) were between 1200 and 1400. and it was found that the critical reynolds numbers became larger when the friction - resistance factor got smaller

    流動在雷諾數（通道高度雷諾數）為1200 1400時發生轉捩，且摩阻越小的通道發生轉捩的雷諾數越大。
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