流動分佈 的英文怎麼說
中文拼音 [liúdòngfēnbù]
流動分佈
英文
flow distribution-
In this paper a kind of cardio - cerebral arterial bifurcation vessel hemodynamic characteristics are studied with the boundary element method, and the blood flowing velocity vector distributions have been calculated. in addition, the flow field distribution and the pressure on the particle surface are also calculated, when there is flow - round particle at the place of bifurcation, the move tendency of the particle is judged, the possible reasons of causing the atherosclerosis, thrombus, angioma are analysed
本文用邊界元方法研究了一類典型心腦動脈分支血管中血液流動的流體動力特性，計算了分支血管血液流動的速度矢量分佈，同時計算了分支附近有多個顆粒狀繞流物時血液的流場分佈，及顆粒物所受壓力狀況，給出了顆粒物的運動趨勢，分析了引起粥樣斑塊病變、血瘤、血栓的可能原因Abstract : based on the research of ladle flow field, the steel flow i ng low of six strands small billet cc ladle is researched, the methods improves s teel flowi ng in the ladle by setting separating and blocking slag wall, separates the steel from the slag, increases the bluyance rate of inclusion, achieves the desired results, and applies itself to the practice
文摘:在中間包流場分佈分析的基礎上，藉助水模擬試驗研究了6流小方坯連鑄中間包內鋼水流動規律，通過設置分流擋渣墻改進中間包內的鋼水流動，分離鋼水和爐渣，提高鋼中夾雜物的上浮率，達到了預期的效果，並應用於生產實踐By using the three - dimension acoustic doppler velocimeter to measure velocities of flow in an ecological river before and after arrangement of cropping loops, the velocity distribution, turbulence intensity and reynolds stress before and after arrangement of cropping loops are compared
摘要採用三維超聲波多普勒測速儀對河道生態修復中種植圈布設前後的工況量測，比較了布設種植圈前後的流速分佈、紊動強度和雷諾應力的變化。In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data
本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好The main work is done with the help of model experiment. in the flood - relief experiment, the flood carrying capacity of spillway tunnel is checked. in the hydraulic experiment of the diversion power conduit system, the followings are studied : the flow condition and fluctuation in the surge chamber, the distribution of flow velocity before the rack in the surge shaft, the amplitude of stage in the quick gate bay etc. the test step, content and results of different proposals are introduced in details
本項優化試驗研究的目的主要在於，通過泄洪系統整體水力學試驗，校核泄洪洞的泄流能力；通過發電引水系統整體水力學試驗，研究調壓井內水流流態和水位波動情況、調壓井內攔污柵前流速分佈情況；確定快速閘門井內水位波動幅度；試驗確定壓力管道水擊壓力穿井系數以及泄洪洞弧形門處的水壓力。The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed
本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。An exhaust flow model of dpf, based on the terms of porous medium, is requisite to display the influences on flow induced by filter ' s configuration
在討論多孔介質條件的基礎上建立了微粒捕集器排氣流動模型，並分析了捕集器結構參數對流動分佈的影響。Computational fluid dynamics ( cfd ) techniques are used to study and understand fluid behavior in tunnels. by simulating complex specific operational cases, we can educe velocity or flux distribution in tunnel under different ventilation and resistance situation and determine the favorable operational procedures of the erlang mountain tunnel ventilation in a fire case. comparison has been made between a simulation and experiment for some cases in order to prove the cfd model is powerful, so that enables the study of cases for which experimental data is not available
採用本文將隧道內的氣流看成是理想流體的一維恆定流動，通過對二郎山特長公路隧道半橫向通風系統建立隧道內的空氣動力學模型，利用計算機進行數值分析與計算，得出發生火災時，不同通風阻力條件下隧道中的風速分佈及流量分佈，並通過實驗室隧道模型實驗進行驗證與修正，依據研究結果給出了二郎山半橫向通風隧道的火災控制方案，從而解決了二郎山公路隧道通風對火災的控制問題，同時為半橫向通風公路隧道的火災通風提供科學的方法。Velocity profile of open - channel flows in the transitional roughness region on mobile beds
過渡區動床明渠流的流速分佈Speed of charge and distribution of displacement current
電荷的運動速度與位移電流的分佈Based on the cross - sectional velocity distribution of flow in natural river, computation expression for correction coefficient of kinetic energy is derived
然後根據天然河流橫斷面流速分佈公式，推導了能量方程中動能修正系數的計算公式。Experimental and theoretical study on the flow distribution of plate heat exchanger
板式熱交換器流動分佈的理論分析與實驗研究Based on a two - dimension model for the flow field in catalytic converter, the flow field and pressure loss in catalytic converter with different inlet headers are simulated
摘要利用催化轉化器流場的二維模型對多種入口管結構的催化轉化器流動分佈和壓力損失進行了數值計算，並提出一種組合型入口管。Supposed that the fluid in all the fields will accomplish a transport in down - flow distance a z, the flow in trickle - bed is a m step markov process, where m = z / z ( z - the height of trickle - bed ). according to the theory of random process, the statistic of the markov process will be calculated out from the original distribution and state - transport matrix
假定液體從床層上端面向下流過z距離后，處于各區的流體就實現了一步轉移，則可將床內液體的流動視為從一個初始分佈開始，經過m步（ m = z z ， z為床層高度）轉移的狀態離散、滴流床流率分佈的模擬與整流時間離散的markov過程。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。After validating the good agreement between simulated results and observed ones, the characteristics and the distribution rules of tides and tidal currents in the whole seas near to zhejiang are thoroughly analyzed, mainly based on the simulated results, combining with the observed conclusion. the co - tidal and co - range charts, co - current charts, types of tides and tidal currents, distribution of maximum possible tidal range and maximum possible tidal current, phenomenon of diurnal inequality, moving modes of tidal currents, tidal ellipses, distribution of tidal residual currents and the vertical structure of tidal currents and residual currents are investigated respectively. and thereout we draw a series of meaningful conclusions as follows, the main of these are : 1
在驗證模擬與實測符合良好的基礎上，本文以模擬計算結果為主，結合實測資料的分析結論，對整個浙江近海的潮汐、潮流特徵和分佈規律作了全面、深入的探討，分別對各主要分潮的潮汐同潮圖、潮流同潮圖、潮汐性質、潮流性質、最大可能潮差分佈、潮汐日不等現象、最大可能流速分佈、潮流的運動形式、潮流橢圓、余流分佈以及潮流和余流的垂向結構等進行了研究，並由此得到了一系列有意義的結論。Results show that the longitudinal velocity distribution fluctuates significantly, and that the relative turbulence intensity and reynolds stress have a little increase
結果表明，布設種植圈后，縱向流速分佈波動明顯，相對紊動強度和雷諾應力均略有增加。The potential problems related to the applications of k - model under the new coordinates are analyzed and the distribution formula of vertical turbulence viscidity coefficients is deduced on the base of logarithmic velocity of flow according to the characteristics of the model
分析了在新坐標系下應用k -模型可能存在的問題，並從模型的特點出發，以對數流速分佈為基礎，導出了垂向紊動粘性系數的分佈公式。Actually correction coefficient of kinetic energy reflects the non - uniform characteristics of cross - sectional velocity in natural rivers. it is related with hydraulic parameters and can be expressed by chezy ' s coefficient. the larger the resistance of boundary, the more non - uniform the distribution of cross - sectional velocity
動能修正系數實際上反映了河道橫斷面流速分佈的不均勻性，與斷面的水力要素有關，可用謝才系數c來表示，水流所受的阻力越大，邊界對其影響也就越大，流速分佈愈不均勻，導致動能修正系數增大。分享友人