transition flow 中文意思是什麼

transition flow 解釋
不穩流動
  • transition : n 轉變，演變，變遷，變化；飛越；過渡期；【音樂】變調，轉調；【修辭學】語次轉變；【語法】轉換；【...
  • 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. Fluid noise mainly comes from out put pulsation of rate of flow, the main reason of out put pulsation of rate of flow is the instant high pressure return flow that obturation cubage produced when the big round curve pressure transition. the v trough on the port plate can reduce the fluid noise. in this paper, the author based on the acting of dam a river and condensability of liquid and used matlab language as tool to calculate the v trough on the original port plate and drew out the p - t diagrammatic curve and analyzed its shortcoming and improved the design of original v trough and got that the best size of its angle was 12. 3 and its length was 5mm and the cross section was an equilateral triangle

    流體噪聲主要來源於輸出流量脈動，造成輸出流量脈動的主要原因是閉死容積在大圓弧段壓力切換時產生的瞬時高壓迴流，在配流盤上開設v型尖槽可降低因高壓迴流而引起的流體噪聲，本文以截流作用和液體的可壓縮性為理論依據，以matlab語言為工具，對原配流盤上的v型尖槽進行了理論計算，繪制出p - t圖線，分析了它的不足，並對原有v型尖槽進行了優化設計，得出了v型尖槽的最佳幾何尺寸：配流盤平面上的v型尖槽的兩邊的夾角為12 . 3 ，槽長5mm ，槽的橫截面為等邊三角形。
  2. With the developing of enterprise. workflow among company become more and more complex, the way of processing transition of work flow by artifical method is becoming unadaptable to economic benefit and requirement of enterprise, and because the fast development of information techonogy. many companys and enterprises construct their information system in succession. since technology about workflow was researched in 1984. workflow management systems of different function and construction have appeared one after another

    隨著企業不斷地成長，公司內部的作業流程更趨復雜，傳統以人工處理流程傳遞之方式已不符合經濟效益與企業需求，且由於近年來信息技術日新月異，因此許多企業紛紛朝向信息化與電子化的方向建立其信息系統。自從1984年開始研究工作流程相關技術以來，不同功能與架構之工作流程管理系統紛紛出現。
  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. Direct numerical simulation of spatial evolutional transition in pipe flow

    空間發展圓管轉捩的直接數值模擬
  5. Study of numerical method for flow transition prediction based on turbulence model

    一種基於湍流模式的轉捩預測方法
  6. In this paper, we study the most serious damming section of the east - one main canal, which is from the entrance of the hao wan flume ( chainage12 + 123. 6 ) to the exit of shang tian yuan tunnel ( chainage24 + 091. 1 ). the main content is analyzing the flow characteristic of the canal, setting up mathematical model of the discharge condition of the east - one main canal, according to the survey section and actual roughness factors, building, bend and so on, we divided the canal into more than loocaculation segments. each segment is calculated by microsoft excel electrical table through computer as permanent transition flow of non - prismatic channel

    本論文研究的渠段為陸渾灌區東一乾渠壅水最為嚴重的渠段，從郝灣渡槽進口（樁號12 + 123 . 6 ）至上天院隧洞出口（樁號24 + 091 . 1 ） ，其主要內容是，分析渠道水流特徵，建立東一乾渠輸水狀況的數學模型，根據測量斷面及實際糙率、建築物、彎道等因素的不同，將渠道劃分成120多個計算段，每段按非稜柱體恆定漸變流，運用microsoftexcel電子表格進行編程計算。
  7. Numerical simulation of steel flow and mixing during grade transition casting

    異鋼種連澆過程中鋼液流動與混合的數值模擬
  8. In case of high reynolds number, the turbulence intensity of centreline drifted off its stable course in the sections, where the flow was in the transition

    在大雷諾數情況下，在流動處于發展階段的管長范圍內，流動中心處的相對湍流強度在入口擋環作用下偏離了穩定狀態。
  9. Phase transition of solid - liquid electrorheological system in flow percess

    固液雙相電流變系統流動過程的相轉變特性
  10. The research on vertical conduit flow of gas - liquid two phases in wellbore aims at the classification, transition and judgement of flow pattern, according to the pressure distribution of oil - gas - water mixture in wellborne, by which the reliable basis will be provided for understanding of well performance, rational control / monitoring and regulating of well flow regime and the design of gas lift

    摘要井筒兩相管流研究的主要目的是用於井筒內流體流型的劃分和流型的轉變與判斷，其基本依據在於井筒內油氣水混合壓力的分佈狀況；在了解了井筒混合流體的壓力分佈狀況之後，能夠為掌握油井生產規律、合理控制和調節油井式作方式及氣舉設計提供可靠的依據。
  11. For example, when the design flow of upward of the peace bridge of upward of the east - one main canal is 45m3 / s, the actual flow quantity is 23. 8m3 / s on the 30th of september in 1989, the water level of the transition region terminal of the mouth of hao wan flume of the east - one main canal had gained the design level of 4. 3m, and the level between downstream and shang tian yuan tunnel was generally higher. it says that the actual discharge capacity now is only about 24m3 / s which is half of the design value. this not only make the benefit of the irrigation district abnormal, but also greatly hinder the economic development of the irrigation district, and lead to the canal run frequently at small flow, high water level, lengthen the discharge duration

    如東一乾渠上段太平橋以上設計流量45m ~ 3 s ， 1989年9月30日實測通水流量23 . 8m ~ 3 s時，東一乾渠郝灣渡槽出口漸變段末端水位已達到設計水位4 . 3m ，其下游至上天院隧洞水位也普遍偏高，即東一乾渠上段目前僅能通過流量24m ~ 3 s左右，只有設計值的50左右，不僅使灌區效益得不到正常發揮，嚴重阻礙了灌區范圍內的經濟發展，而且使渠道經常處于小流量、高水位運行，延長了次通水時間，大大增加了渠道工程的安全管理難度。
  12. The random mathematical model is described using equivalent markov equations. the time and state parameters are discrete. based on the model, the flow rate distributions along radial and average at any height can be calculated directly, moreover, the probability transition matrix of the flow can be determined via the statistic character of the random cumulate particles, and be corrected by s. cd the random theoretical model shown in fig. l, the section of the bed of tbr is divided into a series of concentric circles

    一、在常溫和常壓下進行滴流床反應器流率分佈的研究，以狀態離散、時間離散的齊次markov過程描述了滴流床在滴流區的流率分佈，建立了滴流床在滴流區流率分佈的隨機模型，根據此模型可以： 1 、可直接確定任一高度下的液體徑向流率分佈及平衡流率分佈； 2 、液體流動的概率轉移矩陣可由隨機堆積顆粒的統計特性確定，以參數s修正。
  13. The experimental results of the flow characteristics of the mmc heat sink indicate that the critical reynolds number signifying the transition from laminar flow to turbulent flow is in advance ; under the same experimental conditions, the variation in entrance direction of the microchannel inlet and outlet has little effect on the microchannel ; the experimental values of the friction factor of the de - ionized water in a microchannel agree well with those calculated using the theoretical laminar formula ; furthermore, a comparison of the experimental results and simulation results shows that navier - stokes equation and rng - turbulence model can be used to model the laminar and turbulence flow regions in a microchannel ; meanwhile, the correlations of the flow resistance in the turbulent flow regions for the de - ionized water as the working fluids are obtained from experiments

    對歧管式單通道熱沉流動特性的研究結果表明，微通道內流體流態由層流向紊流轉變的臨界雷諾數提前;改變流體的進出口方向對熱沉總壓降造成的影響很小;摩擦系數的實驗值與理論值較接近;數值模擬結果能夠與實驗值較好吻合;並由實驗給出了紊流區流動阻力的實驗關聯式。此外，選用十二烷基硫酸鈉（ sodiumdodecylsulphate ， sds ）以及烷基多糖苷（ alkylpolyglycoside ， apg ）作為減阻添加劑，研究了表面活性劑添加對微通道流動特性的影響。
  14. 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。
  15. The basic structure of the dissertation and the introduction of the chapters the dissertation consists of seven chapters, besides chapter 1 as an introduction and chapter 7 as a summary, chapter 2 - 6 are the main body of the dissertation, in which chapter 2 studies the industrial trait of investment, chapter 3 examines the institutional trait of industrial investment, chapter 4 investigates the determinate factor of investment flow in china ’ s industries of the industry in economy transition, chapter 5 examines the effects of changes of financing channels in transition economy, chapter 6 study the stock adjustment of capital

    一、論文基本結構及章節簡介本論文一共由七章組成，除作為導言的第1章和作為總結的第7章之外，第2章到第6章是本論文的主體。所以，論文在一個導言的導引下，分五個章節對轉軌經濟的產業投資進行詳細的論述，最後一章對各章節研究進行結論性評述作為結束。其中，第2章研究是投資的產業屬性、第3章研究的是產業投資的制度性質、第4章研究投資的流向及流量決定因素、第5章研究的是產業投資融資渠道變化的效應、第6章研究的是產業存量資產調整。
  16. The dissertation attempts to set up a study structure on china ’ s industrial investment in economy transition : “ the industrial trait of investment ? the institutional trait of investment ? investment flow of transitional economy ? the financing way of industrial investment of transitional economy ? the capital stock adjustment of transitional economy ”, and in this structure we examine the operating characteristics of industrial investment of the transition economy, and get the empirical implications for bettering the market economy of china, and all these are the goal of the dissertation.

    本論文試圖建立一個「投資的產業性質? ?產業投資的制度性質? ?轉軌經濟產業的投資流量? ?轉軌經濟產業投資的融資渠道? ?轉軌經濟的存量資產調整」轉軌經濟產業投資研究簡明框架，並且在這個框架下分析轉軌經濟產業投資的運行特徵、特別是我國工業行業投資的運行特徵，從尋求經驗啟示，以利於市場經濟的完善，這也是本文最終目的所在。
  17. 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。
  18. This technique is also known as test requirements definition technique ( as are control flow graphing, state transition analysis, etc. ), rather than test design

    因果法又被稱為測試需求定義方法（控制流圖，狀態轉換分析等等） ，而並非測試設計。
  19. Transition flow model

    過渡流模型
  20. Experimental studies of model show that when the base slope of spillways changes within the range of 40 degrees to 60 degrees, the water - wing nearly exists in the whole nappe flow, even continues to the transition flow

    模型試驗表明：當斜坡角度為40 ~ 60時，水翅幾乎存在於整個跌落水流范圍內，甚至持續到過渡水流。
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