turbulent fluid 中文意思是什麼
turbulent fluid
解釋
湍流紊流-
Considering the characters of the viscoidal turbulent flow over high - speed train, the computing model of the outer fiow field for high - speed train has been established based on the incompressible fluid navier - stokes epuation and the turbulent model of ke two equations. the equation set of the flow field problem via finite element methods ( fem ) has been set up
根據高速列車粘性紊態繞流的特點，在較少簡化的條件下以navier - stokes方程和-兩方程紊流模型為基礎，建立了高速列車外流場的計算模型，在近壁區域採用壁面函數修正紊流模型。 -
By performing fourier transformation, the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size, specific gravity, velocity gradient, and the characteristic frequency of energy - containing eddies are four basic influencing parameters. it is proven theoretically that under certain conditions, the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid. based on the equations of two - phase flow, the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water
通過對細小顆粒在剪切流場中運動方程的fourier分析，得到了顆粒脈動強度和流體脈動強度之間的定量關系，表明顆粒粒徑、顆粒密度、流速梯度以及紊動場含能旋渦的特徵頻率是影響顆粒脈動強度的主要因素，首次從理論上證明了在一定條件下，顆粒在縱、垂向的脈動強度均會超過相應的流體脈動強度，為已有的實測資料提供了合理的解釋。 -
Based these researches acquired and using a mathmatical model, this thesis tries to research the contaminant concentration distributions of three - dimention indoor turbulent flow by means of computational fluid dynamics and heat transfer, and then works out the ventilation efficiency
本文企圖在前人的基礎上，通過建立相應的數學模型，用流體流動數值計算方法來模擬室內三維的紊態氣流中的污染物濃度分佈，進而分析計算室內的通風效率，得出通風效率較好的室內氣流組織形式。 -
On the basis of the existing turbulent model and its respective numerical simulation, this study offers emulation solutions to the study of pneumatic splicing, by selecting appropriate models and the software of computational fluid dynamics
在研究現有流體力學中的湍流實驗模型以及其對應的數值模擬的基礎上，選用適當的模型和計算流體力學軟體對空氣捻接機理進行模擬。 -
In the turbulent flow, the fluid ’ s physical parameters has the stochastic change along with the time and the space, it is very difficult to carries on its rate process ’ s precise computation and the simulation with mathematics method, but unstable condition navier - stokes equation regarding open canal current of water transient motion suitable
閘后水流經過加糙的海漫段時，其水流狀態屬明渠紊流。流體中的各種物理參數，都隨時間與空間發生隨機的變化，很難用數學的方法對其運動過程進行精確計算和模擬。 -
In this paper, the physical experiment and numerical simulation based on the volume of fluid ( vof ) method to solve turbulent governing equations in the numerical wave tank are conducted to investigate the interaction between surface waves and sandbars on the seabed
本論文通過物理模型試驗和基於vof方法求解湍流控制方程所建立的數值波浪水槽模型，對波浪與海底沙壩地形之間的相互作用進行了研究。 -
A kind of two - equation turbulent model of charged fluid flow is constructed, in which the interaction between electric field and flow field is considered. based on analyzing the properties of forces on the charged droplets in the spray, pseudo - fluid of charged droplets phase method is adopted to develop a kind of charged two - phase turbulent model. this model takes account of the interaction between charged droplets phase and electric field, the inter - phase action between droplets and gas, convection and diffusion of droplets " turbulent energy
考慮電場與流場的耦合作用，建立了荷電流體的湍流模型，在荷電顆粒受力分析的基礎上，採用顆粒擬流體的方法建立了荷電氣液兩相湍流理論模型，該模型考慮了荷電顆粒相流場與電場的耦合作用，氣相與顆粒相的相間作用以及顆粒相自身湍能的對流與擴散。 -
This article is mainly about the study on the dynamic characteristics of labyrinth seals and concludes the dynamic characteristic of labyrinth seals with the two - control - volume model by the means of turbulent flow theory and calculating fluid mechanics in order to further study on the flowing law of the labyrinth seals
本論文圍繞迷宮密封流場動力特性系數的研究展開的，採用兩控制容積模型，利用湍流理論和計算流體力學的方法，深入研究迷宮密封內部流動的規律、密封性能，獲得迷宮密封的動力特性系數。 -
Based on prandtl ' s momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub - layer, buffer layer, and main turbulent stream for non - newtonian fluid flowing turbulently in ducts, which according to karman ' s three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non - newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate
摘要以普蘭德動量傳遞理論為基礎，按照卡門的三層模型，通過室內模擬環道用0號柴油及加入減阻劑在圓管內的流動參數的測定，計算了非牛頓型流體管內湍流邊界層的層流內層、過渡層、湍流中心的渦流粘度，渦流粘度與運動粘度比、總應力隨相對位置的變化等定量參數，探討了高分子減阻劑對非牛頓流體流動特性的影響，對湍流減阻現象的機理與增大減阻率的條件進行了定量分析。 -
Establishment of charged particle pseudo - fluid multi - phase turbulent flow model
荷電顆粒擬流體多相湍流模型的建立 -
Under strong turbulent flow condition the property in three direction is different, and it relates with the particle granularity and density, as well as the fluid property and the turbulent intension
在此基礎上，分析了固體顆粒與液體的跟隨性，認為在強湍流情況下，顆粒除在徑向方向的運動有別于液體介質外，在軸向與切向也存在差異，且這種差異與顆粒粒度大小、密度、流體性質以及湍流強度有關。 -
Abstract : according to the character and actual condition of rh in shanghai baogang, molten steel flow in ladle and its effect on decarburization were studied with a three dimension turbulent flow and concentration modelling. the results show that, within a certain range, the decarburization rate increases not only with the increase of snorkel diameter and ar fluid flow but also with the decrease of the immersed depth of the snorkel
文摘:根據上海寶鋼rh的特點和實際情況，建立了三維流場、濃度場程序，對鋼包內鋼水的流動、處理過程的脫碳進行了研究，並對它們的影響因素進行了分析.結果表明，在一定范圍內增加循環管直徑和吹氣流量、減小浸漬管浸入深度有助於提高脫碳速度 -
Flow type of smoke fluid is turbulent gas - particle two - phase flow in rear smoke channel of power station boiler
在現行的電站鍋爐中，尾部煙道內的煙氣流動是典型的湍流氣固兩相流動。 -
Numerical simulation of thermal environment in an urban residential district is a heated and challenged topic home and abroad in recent years. this dissertation analyzes and studies mainly the basic theories and applications of cfd ( computational fluid dynamics ) and nht ( numerical heat transfer ). governing equations of outdoor turbulent airflows have been set up and improved, considering the impact of temperature differences, which induces the standard k - e turbulent model insufficient
城市住宅小區熱環境數值模擬研究是近些年國際上研究的熱點和難點，本文主要從cfd / nht基礎理論及應用闡述了這一問題：建立室外空氣湍流運動的控制方程（組） ，並且針對一般標準k -湍流模型存在的問題，考慮溫差的影響並對其加以改進。 -
Using fluid analyze software, the 3d turbulent flow is stimulated based on navier - stokes equations and k - model. the turbulent flow through axial flow pump impeller is simulated by using the non - uniform triangle mesh system and the finite volume method. calculated results are presented at the design operating condition for the impeller in detail, which give a valuable reference to improve the performance of the impeller
最後，應用cfx流體分析軟體，基於n - s方程和標準-紊流模型，採用非結構化網格技術，用聯立求解各變量代數方程組的方法對設計工況下的軸流泵葉輪內部的三維紊流場進行了詳細的數值計算與分析，並預測其性能。 -
Abstract : attention is focused on the random mathematical model of particle dispersion in non - uniform turbulent fluid. according to the initial condition, the analysis formulas of point source, linear source and surface source are derived. numerical results are easily obtained by combining linear analytical method with nonlinear numerical method, which are compared with the experimental data
文摘:研究粉塵顆粒隨機擴散數學模型，在非均勻湍流場中，根據初始條件，推導出點源，線源和面源的解析計算式，其數值計算結果與試驗吻合 -
Attention is focused on the random mathematical model of particle dispersion in non - uniform turbulent fluid. according to the initial condition, the analysis formulas of point source, linear source and surface source are derived. numerical results are easily obtained by combining linear analytical method with nonlinear numerical method, which are compared with the experimental data
研究粉塵顆粒隨機擴散數學模型，在非均勻湍流場中，根據初始條件，推導出點源，線源和面源的解析計算式，其數值計算結果與試驗吻合 -
The computational region was composed of fluid region enclosed by stator and rotator disks, as well as inner and outer shrouds, and solid region, that is rotator disk. the main research work and results are the following : 1 ) numerical study was conducted for the flow problem inside a typical rotator - stator cavities with different turbulent models including 1 - equation model and high k - model rng k - model
論文主要工作和結果如下： （ 1 ）針對典型的轉-靜盤腔模型進行數值研究，通過對單方程模型、高k -模型和rngk -模型獲得的計算結果進行比較以及與相關試驗數據驗證，結果表明， rngk -模型較高k -模型和單方程模型更能準確地模擬轉靜盤腔的流動。 -
Moreover, this paper investigates the influences of surfactant aqueous solutions on flow characteristics of a mmc. sodium dodecyl sulphate aqueous solution and alkyl polyglycoside aqueous solution are used as working fluids. the experiment results indicate that the drag reduction depends on flow velocity and temperature ; the drag reduction effects aren ’ t very obvious in laminar flow region, but when fluid enter turbulent flow region, the drag reduction increase notably, the drag reduction effects
研究結果表明，阻力減小率（ dragreduction ， dr ）與流速和溫度有關;層流區內表面活性劑的減阻效果不是特別明顯，但進入紊流區后減阻效果開始增強，尤其進入旺盛的紊流區后減阻效果大大增強;溫度提升也可增加dr ，但在溫度較高時添加sds后減阻效果的改善卻不及apg 。
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