mean velocity of flow 中文意思是什麼

mean velocity of flow 解釋
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  • mean : vt 1 意，有…的意思，意思是…。2 意指，用…意思說；意味著，就是。3 （用語言、繪畫等）表示意思，表示...
  • velocity : n. 1. 迅速；快速。2. 速度，速率。3. 周轉率。
  • of : OF ＝Old French 古法語。
  • 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. On the other hand, it is indicated that the velocity field consists of a depth - independent inertial oscillation and a time - mean shear flow, which can be obtained by subtracting the inertial oscillations time mean in one inertial period. the hodograph of the velocity vector of time - mean flow at the different depths consists of a ekman spiral, and the surface velocity is 30. 3 ? to the right of the wind

    一維模式的流場結果表明，混合層中的流場是由慣性波動與時間平均流兩部分疊加而成，且通過時間平均消去慣性波動后得到平均流，其不同深度的流速矢量構成一ekman螺旋，表層流速矢量相對風向右偏了30 . 3 』 。
  2. The mean velocity profile of sediment - laden flow can bet divided into two regions. the profiles for both regions follow the logarithmic law. only the von karman universal constants are different from each other

    渾水時勻流速分佈可分成兩個流區，兩個流區的分佈均遵循對數規律，只是相應的卡門常數有所不同。
  3. According to the relationship between characteristics of the traffic flow and traffic congestion, fuzzy logic is adopted to partition the basic parameters ( mean velocity and flow volume ) into several fuzzy subsets, then fuzzy inference system is established to generate loc

    通過分析交通流基本參數與交通擁擠現象之間的關系，本文運用模糊數學的方法對交通參數（交通流量和平均速度）以及擁擠度進行描述，建立了交通擁擠度的模糊推理系統。
  4. The goal of this paper is to study fully developed turbulent pipe flow. with the aid of the tripping annulus at the inlet, based on the experimental investigation and numerical simulation, detailed researches on a few basic rules in pipe flow have been performed, such as mean velocity profile, relative intensity of turbulence, the log - law, von karman ' s constant and reattachment length, thus filling some gaps in the research work of predecessors and obtaining a far - reaching understanding

    本文的目的就是利用入口擋環進一步探索充分發展的圓管湍流，通過實驗和數值模擬對圓管湍流的若干基本規律，如平均速度分佈、相對湍流強度、對數定律、馮?卡門常數和再附著長度等進行詳細的研究，以填補前人研究中的一些空白，並獲得更深入的了解。
  5. All individuals underwent transcranial doppler ultrasonography ( tcd ) with assessment of mean blood flow velocity ( mv ) in the mcas

    所有對象都通過經顱多普勒測定大腦中動脈的平均血流速度。
  6. Abstract : the effective shear stress of sediment transport is analyzed theoretically and tested by experimental data. the result shows that the effective shear stress is neither the overall shear stress nor the sand grain shear stress, but the geometric mean of these two stresses. the effective shear stress not only generalizes the flow intensity but also summarizes the flow intensities of mean flow velocity, stream power and unit stream power

    文摘:本文通過理論分析及實測資料檢驗表明，無論對於何種泥沙運動狀態，決定泥沙運動的有效切應力既不是沙粒切應力又不是全部切應力，而是介於兩者之間，近似為沙粒切應力與全部切應力的幾何平均值.這一有效切應力不但是對切應力類水流強度指標的總結，還可以概括平均流速和水流功率等水流強度指標
  7. Mean velocity distribution, mean length of recirculation region and the structure of instant stream are presented by the experimental data, which help us understanding character of this flow further

    實驗給出時均流速分佈、時均迴流區長度和瞬態流動結構，探討了后臺階分離流流動特性。
  8. The numerical results show that the flow - field structures and main features of the compressible mixing layer including the distribution of mean velocity, turbulent fluctuation intensities, reynolds stress and growth rates agree well with experimental and other numerical results

    計算出的流場結構和主要的流動特徵包括平均速度、湍流脈動強度和雷諾應力的分佈以及混合層擴張率都同實驗測量和其他時間發展數值模擬結果符合得很好。
  9. On this basis, fortran program is written to solve temperature and velocity fields in transformer. by using this program we can calculate total flow, duct flow, mean temperature rise of transformer oil, oil time constant, mean oil temperature rise in each winding - coil, temperature distribution in each winding - coil, and stable / transient state temperature field. so this program has a great use value

    在此基礎上，我們編制了計算自然油導向冷卻的具有餅式線圈變壓器流場和溫度場的fortran程序，程序可以對總油流量，進入各相、各油道的油流量，各線圈內的油流分佈，變壓器的油平均溫升，油的時間常數，各線圈的平均線油溫升，各線圈內的油溫分佈以及各線圈的穩態溫度場、暫態溫度場進行定量模擬，具有較強的實用價值。
  10. At the same time width and blood flow velocity of liver artery in port of liver, width and blood flow velocity of portae vein, the number of blood cells in circulation had been measured. results after liver transplant, the volume of spleen decreased, the mean blood flow velocity of spleen vein and the number of blood cells in circulation increased

    方法應用彩色多普勒超聲測量術前及術后第1 、 2及4周35例肝硬化合併脾亢病人脾臟的長徑、厚徑及脾門靜脈管徑、平均血流速度及峰值血流速度等並進行比較。
  11. And the conclusion is that vita method is a more reasonable method in burst detection when the threshold value is between 0. 7 to 1. 0. in order to investigate the influence of transverse curvature of the wall, the direct numerical simulated data bank of turbulent channel flow is also analyzed. the mean velocity profile in pipe and channel flow is compared

    本文還對圓管和槽道內的猝發事件進行了分析，得到的圓管和槽道內的猝發周期大致是相同的，但是在猝發的強度上槽道要大於圓管；並且進一步的分析表明猝發強度的差別主要在於徑向速度的差別，這說明壁面橫向曲率對于徑向的流動影響較大，而對流向流動幾乎沒有影響。
  12. Flow measurement method of pipe for gas drainage. measurement method of mean velocity tube flow transducer

    抽放瓦斯管道流量測定方法.均速管流量傳感器測定方法
  13. A " saddle " shape appears in the curve of relationship between smd ( sauter mean diameter ) and charging voltage, the droplets " size distribution fluctuates with the change of charging voltage. the influence of electric field on flow field is apparent. the distribution of velocity and turbulent energy, structure and size of vortex appear different changes with the increase of voltage of charging

    索太爾粒徑隨電壓的變化曲線中出現「馬鞍」現象，粒徑的分佈情況隨電壓的升高出現波動性變化；電場對流場的作用明顯，速度與湍能的分佈及渦的結構等流場特性隨電場的改變均有不同規律的變化。
  14. Spectral method and spectral element method are both used in the present dns. the flow is developed from an initial velocity field whose mean and root mean square values are fitted to the experimental data. the reynolds number of the flow is 2250 based on the mean velocity and the radius of the pipe

    本文在空間離散上採用譜方法和譜元法的結合，通過在圓管層流速度剖面上疊加隨機擾動作為初始場的方法，計算了管長為，平均雷諾數為2250的光滑圓管內的湍流流動，建立了圓管內較低雷諾數下速度場和壓力場的數據庫。
  15. ( 3 ) through dimension analysis, factors that affect the flow deceleration through frames are discussed. based on flume experiments, this study indicates the velocity near the bed decreases as the l / h increases, and the l / h decreases, the influence of frames height on the effect of velocity near the bed is not distinct ( 4 ) by 2 - d mathematical model, patterns of flow through frames are analyzed and the influence of different frame formations on the protection zone is researched, mean velocity in vertical decreases and protection zone enlarges as the l / h, b / b and a / h increases

    （ 3 ）通過因次分析，探討了四面體框架群減速率的影響因素，並進行了系列水槽試驗，得出：近底流速的減速率隨框架群相對長度l h的增加而增加，隨框架群相對間隔距離l h的增加而減小；框架群高度對近底流速的減速率影響不大，框架群高度的增加主要表現為減速區的增高。
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