transition flow model 中文意思是什麼

transition flow model 解釋
過渡流模型
  • 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、...
  • model : n 1 模型，雛型；原型；設計圖；模範；（畫家、雕刻家的）模特兒；樣板。2 典型，模範。3 （女服裝店僱...
  1. 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
  2. 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。
  3. 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。
  4. 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。
  5. Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research

    接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。
  6. In this paper, the transition from churn flow to annular flow for upward gas - liquid in vertical concentric annulus is studied and a transition model is developed by considering the structural feature of the concentric annulus and the flow characteristics for churn and annular flows in the concentric annulus

    根據團狀流及環狀流的流動特性，並考慮同心環形管的結構特徵，建立了垂直同心環形管上升氣液團狀流向環狀流轉換的新的理論模型。
  7. Abstract : based on the turbulent flow kinetics theory the paper describes astudy on two - region flocculation model, the turbulent region is the dominant effect of fiocculation speed, the transition region is the dominant effect of scale and compactness of floculating body, and the order magnitude of available energy disipation and controlling index is put forward

    文摘:應用紊流動力學原理，分析紊流條件下兩區絮凝模型，提出紊流區主導絮凝速率，過渡區主導絮凝體的成長尺度及密實度，導出了有效能耗的量級及絮凝控制指標。
  8. It is pointed that the failure of this model in predicting the transition stems from the non - objective of the momentum balance relationship of smooth annular flow

    由此闡明了該模型難以正確預測微重力條件下氣液兩相彈環狀流轉換條件的原因在於光滑環狀流動量平衡關系的非客觀性。
  9. A detailed analysis on the characteristics of the solution of the void fraction matched model for the slug - to - annular flow pattern transition at microgravity condition, which is based upon the drift - flux raletionship of slug flow and the momentum balance relationship of smooth annular flow, is presented

    摘要對基於微重力條件下，氣液兩相彈狀流滑移流率關系和光滑環狀流動量平衡關系的彈環狀流轉換空隙率匹配模型的解的特徵，進行了深入分析。
  10. An ooa model may be expressed informally in diagrams or text, or more formally in entity - relationship ( er ) diagrams, data - flow diagrams, state - transition diagrams, or a variety of specialty representation currently available

    面向對象分析模型可以非正規地用圖表或者文本表示，或者正規些用實體關系圖，數據流圖，狀態轉換圖，或可以利用的其他方式來表示
  11. Transition flow model

    過渡流模型
  12. 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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