紊流度模型 的英文怎麼說

中文拼音 [wènliúdùmóxíng]
紊流度模型 英文
turbulence intensity model
  • 紊 : 形容詞（紊亂） disorderly; confused
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 模 : 模名詞1. （模子） mould; pattern; matrix 2. （姓氏） a surname
  • 紊流 : burble
  • 模型 : 1 （仿製實物） model; pattern 2 （制砂型的工具） mould; pattern3 （模子） model set; mould patter...
  1. Typical variable windfield models, such as large scale steady wind flow, downburst, turbulence, airflow over mountain, are developed and their physical specialities are discussed. furthermore, simplex modules are integrated to form complex model. facticity and application technique to flight simulation are discussed

    討論了以下幾種典型風場模型（大尺度均值風模型、 dryden紊流模型、微下擊暴流模型和過山氣流模型）的物理特徵與建模方法，並對單一模型進行復合，建立變化風場模型庫，最後討論了各種模型的真實性與如何應用於飛行模擬； 3
  2. The research object of this thesis is a chip - array that is fixed on one of printed circuit boards ( pcb ), which are located in a forced air field ( forced convection ) in an electronic case ; and from the essential equations of airflow we can deduce the mathematical model of the turbulent flow ; then we can establish the finite element algorithm and apply the fe software to work out the equations of turbulent flow, finally we can use the software to display and analyse the field of flow and temperature

    本文以處于強迫空氣對流流場中的某pcb板及其板上的電子元件陣列作為研究對象，推導了紊流流場的數學模型，並建立了相應的有限元求解格式，應用有限元法分析軟體對該系統的紊流流場和溫度場進行了模擬分析：解算出pcb板上各電子元件的溫度分佈；並提出了用於求解系統風道特性曲線的cfd方法。
  3. 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。
  4. The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade

    葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題，本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上，建立了三維、可壓縮紊流的物理模型，得到了通用的求解辦法；利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型，計算了冷卻空氣通過這幾種通道時的流動與換熱情況，得到了各種不同情況下計算區域的溫度場、壓力場、速度場；在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果，通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較，表明了這種新型鮚構的優勢，對于葉片內部通道冷卻結構的設計可以起到指導的作用。
  5. Phenomenological turbulent flame velocity model for premixed combustion

    預混合燃燒現象學紊流火焰速度模型
  6. In arbitrary curvilinear coordinates, the wall function is used for treating near wall regions. the influences of two different inlet gas parameter distributions and turbulent combustion models, as well as three different afterburners on turbulent combustion flow fields and wall temperature profiles are calculated. comparisons of experiment results and calculations results show that second - moment combustion model is reasonable for modeling turbulent reacting flows, inlet gas parameter distributions is more important. calculation method is reliable and can be used for the optimum design of afterburner

    數值研究三種不同幾何形狀、兩種進口氣流參數分佈、兩種紊流燃燒模型等對加力室內各氣流參數、隔熱屏和加力室筒體壁面溫度分佈的影響，計算結果與試驗數據比較表明:不同幾何形狀加力室對加力室內紊流燃燒流場的影響要比進口氣流參數分佈大些，正確給定進口氣流參數分佈較為重要，二階矩紊流燃燒模型更適用摸擬三維紊流燃燒流動，計算方法合理，編制的計算程序可靠，可供加力燃燒室優化設計用。
  7. For the present two les models, adopting the subgrid eddy viscosity concept and introducing the transport equation of turbulence energy k, the subgrid scale turbulence is parameterized by the turbulence energy k and the length scale of turbulence / ( k - 1 model ). in addition, vegetation is considered as an internal source of resistant force and turbulence energy

    在應用大渦模擬方法求解數值計算模型控制方程時，亞網格雷諾應力項沿用了亞網格渦粘性系數思路，引入亞網格紊流脈動動能k的輸運方程，建立了關于亞網格紊流脈動動能k和紊流特徵長度l的k - l模型求解。
  8. Next, aiming at the state of the art in engineering turbulence models, one extended explicit algebraic reynolds stress model to simulate anisotropic buoyant turbulent flows. validation was done using experimental and other numerical results of turbulent thermal mixing in t - junction flows

    進一步的，針對當前考慮浮力作用紊流模型的研究現狀，導出了適合模擬各向異性的浮力紊流的顯式代數雷諾應力模型，並利用t型交叉管內的溫度混合試驗成果進行了分析驗證。
  9. The computational results of models are in satisfactorily agreement with the experimental data. all the results show the validity of the proposed models. the present k - l les and 3d k - l les model are proven to be new useful tools for the study on turbulent flow in open channel with a vegetated region

    K - lles模型和3dk - lles模型為進行帶有植物的河道水流紊流運動數值計算研究，特別是對分析存在植物的河道水流運動形態及由於植物的阻礙在河道中產生的大尺度渦的形成、發展研究提供了一個新的研究途徑。
  10. Finally, the proposed anisotropic buoyant turbulence model is applied to study turbulent density flows with combined temperature and salinity discharging into a tank with a slope bottom

    最後，利用導出的浮力紊流模型研究了因溫度和鹽度的組合作用引起的浮力流動特徵。
  11. It uses the software of phoenics, imitating stratified air distribution of three - dimension turbulence in large space at many kinds of working at in k e pe in bo at arch wi m for ndds cut ords ed as pe of air ~ for wt pe of - w op of ~ nd we ch de ^ t wt the pe pe the pe ed co the bo of mp nd - - ds the for for the nd ~ or ~ for ds in tw pe bo inedwh edfor bo an all chwt to gr - - rpwhthe ~ oftw -, so ihat it co ha the ed ofds be all ghthemeedch

    使用phoenics軟體，對多種工況下高大廠房大空間分層氣流組織進行三維紊流模擬。主要研究了高大廠房內的水平隔斷氣流，分析送風噴口類型、送排風口位置、障礙物高度、地面干擾氣流等因素對隔斷氣流的影響。在經濟性和實用性上得到最優化的結果，為大空間變動塵源復雜氣流的優化組織研究提供了參考。
  12. 2, application of the modified k - e model by munk - anderson equation to gravity flow in reservoir shows that the modified model overestimates the turbulent intensity in reservoir. it results enhance of momentum exchange in vertical direction and large error in velocity

    採用munk - anderson修正的-模型模擬水庫重力下潛流，發現該修正模型過高地估計了水庫的紊動強度，使垂向動量傳遞加大，流速誤差明顯增加。
  13. 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。
  14. In this paper, hydromechanical theories, three - dimensional unsteady turbulent finite volume model and pheonics software are adopted to simulate the pressure field and the velocity field of the drainage pipe in allusion to the actuality of the necessary pressurization test before being used. then analyze the computational results and figure out the variational rules of pressure and velocity with different leakage location while close water test or close gas test is applied

    本文針對無壓管道交付使用前必須進行嚴密性試驗的現狀，運用流體力學基本理論和三維非穩態紊流的有限體積模型，採用pheonics計算軟體，數值模擬不同管徑下不同漏水點的滲漏情況，模擬閉水和閉氣試驗時管道內部的壓強場和速度場的變化，並分析計算結果，從中找出其變化規律。
  15. The results of the three dimensional simulation emphatically show flow characteristics change along the spillway width and furthermore verify that the combination of k - e turbulence model with the vof model and unstructured grid can successfully simulate complex three dimensional turbulent flow on the stepped spillway

    三維計算著重體現了流場沿溢洪道寬度方向的變化規律，進一步驗證了vof模型、非結構網格與卜。紊流模型相結合能夠成功地模擬三維階梯溢流壩面復雜流場。
  16. The standard k - e turbulence model was employed in the core region of the cavity. two low reynolds number turbulence models, single equation model and launder and sharma low - reynolds number k - e model, were used in the near wall regions

    在紊流核心區採用標準k -模型，近壁區分別採用單方程模型和launder ? sharma低雷諾數k -模型，採用simple演算法，求解並獲得了盤腔中的速度和壓力場、全域的溫度場以及流固界面上的換熱系數和努謝爾數分佈。
  17. In this paper, based on the navier - stokes equation and the k - turbulent model, the numerical simulation of the 3d turbulent flow in a centrifugal impeller, of which specific speed is 93. the distribution of the velocity and pressure in the blade - to - blade passage are presented at the design and off - design operating conditions. the simulation results were verifiable with the results measured by piv

    本文基於n ? s方程和標準的k ?雙方程紊流模型，採用商用cfx - tascflow計算軟體對一離心泵葉輪模型進行了葉輪內部三維紊流數值模擬，得到了三個典型工況下、從輪轂到前蓋板每一個斷面上的速度和壓力分佈。
  18. Ebu - arrehenius and second - moment turbulent combustion model are used to determine the reaction rate. to consider the influence of heat radiation on the gas temperature and wall temperature, the six flux model is applied to predictions of heat flux distributions. the discretization of governing equations on a non - staggered grid system is performed by hybrid scheme over the control volume, and discretization equations are solved with simple algorithm

    利用橢圓型微分方程法和區域法生成三維貼體網格，文中數學模型有紊流模型、紊流燃燒模型和輻射模型，採用k -雙方程模型來預估紊流特性， ebu - arrehenius和二階矩紊流燃燒模型來估算化學反應速率，六通量輻射模型預估輻射通量，以便考慮熱輻射對壁溫和氣流溫度的影響。
  19. We successfully apply the two - fluid model ( tem ) and kinetic theory of granular flow studying the two dimensional dense gas - solid flow characteristics in the large scale circulating fluidized beds and the cold experimental system with piv. the results of simulation are in accord with others " simulation and experimental results. in the end, we make the three dimensional simulation for the cold cfb riser, which is closer to the factual operation and this experimental results

    在對高濃度氣固兩相流的研究中，根據fluent軟體現有的條件和解決工程實際問題的需要，採用單氣固相雙流體歐拉模型，採用模擬紊流固粒流中普遍接受的方法「顆粒流的運動理論（ kinetictheoryofgranularflow ） 」 ，對大尺度循環流化床進行了二維數值模擬，與他人數值模擬結果和實驗結果進行了對比，檢驗模型的準確性。
  20. The paper presents a model of turbulent flow, which can exactly provide data of the characteristic length and velocity of turbulent flow

    本文介紹的紊流模型能準確提供特徵速度和特徵長度參數的數值。
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