湍流基礎 的英文怎麼說

中文拼音 [liújīchǔ]
湍流基礎 英文
fundamental of turbulence
  • 湍 : [書面語]Ⅰ形容詞（湍急） rapid; rushing; torrential; swiftⅡ名詞（急流的水） rapids; rushing waters
  • 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...
  • 礎 : 名詞（墊在房屋柱子底下的石頭） plinth
  • 湍流 : 1 （急流） swift current; rushing waters; torrent; rapids 2 [物理學] turbulent flow; turbulence; ...
  1. Numerical simulation and analysis of wind environment in an urban residential district are carried out, based on the theoretical research conclusions mentioned above. airflow fields distributions of pressure and turbulent quantities are obtained and laid out. statuses of wind environment with two different inflowing - azimuths are discussed

    基於上述基礎理論研究對住宅小區風環境（住宅小區熱環境的主要組成部分）進行了數值模擬及分析，討論了兩種不同角度來流的風環境狀況：氣流組織、風壓分佈、湍流量分佈等。
  2. A 3 - d viscosity turbulence model is used to analyze the unsteady around flow field of the thrust - vectoring engine of the jet vane, and results of the area including vane base, vane flake and motor shell are presented

    摘要以推力矢量發動機的燃氣舵為研究對象，採用三維、粘性、湍流流動模型和數值分析的接觸網格技術，在定常流動計算的基礎上，對包含舵基、舵片和發動機殼體的區域進行詳細數值分析。
  3. The non - local turbulence parameterization, i. e., transilient theory was used in the host model mm4 to simulate the turbulent activities of the atmosphere

    在中尺度區域模式mm4的基礎上對其中的湍流參數化方法作了改進，嘗試用非局地閉合方法代替局地
  4. On the basis of cold gas simulation, a numerical simulation of two - phase turbulent flow was performed employing an eulerian - eulerian approach and k - - a. p. turbulent model. the accuracy of numerical simulation was verified and evaluated by the experimental result

    在冷流模擬的基礎上，對燃燒室尾部的兩相湍流流場進行了數值模擬，數值模擬採用雙流體模型和k - - a . p .湍流模型。
  5. 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。
  6. In the last part, an experiential formula for nondimensional thermal stratification height is obtained, which includes inlet temperature t, inlet velocity v, heat transfer of the wall body q and the distance of heat source l. in order to obtain a more realistic result, the ? model is used to simulate the airflow and the buoyancy item is treated by boussinesq hypothesis. the paper investigates the flow field of the displacement ventilation in an office by a numerical method

    兩方程湍流模型為基礎的壁面函數處理方法，對熱浮升力項採用了boussinesq假設，得到了收斂的溫度場、速度場分佈。在此基礎上，給出了熱力分層高度的計算方法，並分析了送風溫度、送風速度、圍護結構傳熱和熱源分佈等因素對熱力分層高度的影響。
  7. The three - dimensional primitive equations were derived for ocean in the condition of turbulence, by using the reynods time average method

    首先在流體動力學和熱動力學的基礎上，應用雷諾時均方程法，詳細推導得到海水在湍流狀態下的三維原始方程。
  8. 3. based on the wall equation and k - ? model, the variable c ? and the variable lm were used to improve the numerical simulation of pipe flow with the tripping annulus at the inlet

    在壁函數和-模型的基礎上，採用了變模型常數c _ （ l ）和變混合長度l _ m的方法對入口處帶有擋環的圓管湍流模擬計算進行了修正。
  9. After a thorough analysis of the properties of flow field, following the thinking of simulating gas phase flow by les and simulating particles " motion in lagrangian approach, a two - dimensional mathematical model of gas - particle two phase turbulence was founded

    在對流場特性進行全面分析的基礎上，根據對氣相流場採用大渦模擬，對顆粒相運動採用lagrangian方法進行求解的思路，建立了二維氣粒兩相湍流流動數值模擬的數學模型。
  10. The threshold of autoregressive orders is obtained to identify the flow regimes of bubbling bed and turbulent bed. the accuracies of identification of bubbling bed and turbulent bed are 94. 3 % and 80. 0 % respectively. the arma models of the signals acquired from experiments are constructed

    在此基礎上，利用模型階數進行流型的判別，初步實驗結果表明，所採用流型辨識方法是有效的，氣固流化床中鼓泡床和湍動床的辨識成功率分別為94 . 3和80 . 0 。
  11. Certain discrepancy remain between the simulation results and the experiment results, not only caused by the turbulent model, but also by the simplification of the inlet boundary condition and the mesh generation. modeling gas - particles interaction flows is complex. in this thesis, gas - phase transport equations coupled with the gas - particle interaction are derived based on the dsm turbulent models to handle the interaction of momentum and kinetic energy of turbulence between the gas and particles

    分離器內的固體顆粒運動採用涉及湍流擴散影響的隨機軌道模型和確定軌道模型，同時在湍流模型中加入了顆粒影響的源項，在流場計算的基礎上，模擬了不同直徑的顆粒在分離器內的運動規律及顆粒分離效率，並同理論和實驗得到的數據進行了比較。
  12. Based on series fundamental experiments and theoretical analyses, the electro - spray of fuel and charged two - phase turbulent flow are studied systematically and comprehensively in this thesis, which established a research foundation for electro - spray combustion. the research involves charging mechanism, charging and atomization characteristics of fuel, flow field properties of electro - spray, theory of charged two - phase flow and numerical simulation

    本文圍繞燃料的靜電噴霧與荷電兩相湍流射流進行了系統而深入的理論和實驗研究，研究內容包括燃料的荷電機理、荷電霧化特性、荷電噴霧射流流場及荷電兩相湍流理論與數值計算，為荷電噴霧燃燒的進一步研究奠定了基礎。
  13. 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。
  14. Several feasible boundary conditions of thermal environment computations are provided. numerical simulation of thermal environment in that residential district is carried out depending on theoretical studies, wind environment simulations and thermal environment testing mentioned above. distributions of wind velocity, pressure, turbulence and temperature in two different periods are investigated and analyzed, and feasibility of thermal environment numerical simulation is proved by comparison of temperature and velocity values between testing and simulation in some tested spots

    提出幾種可行的熱計算邊界條件，在上述基礎理論研究、風環境模擬計算、熱環境測試等基礎之上對住宅小區熱環境進行了數值模擬，分析了兩種時段內風場、壓力場、湍流場及熱場分佈，並比較了部分地點溫度和風速測試值與計算結果的差異，論證了熱環境數值模擬的可行性。
  15. We analyze the energy balance equations for mean flow, turbulence and wave motion in the ocean surface mixed layer, and discuss the wave - turbulence interaction involved. the observed phenomena, in which vertical turbulence mixing and turbulence dissipation are enhanced by the action of breaking wave, are explained

    以現有的理論研究為基礎，通過分析海洋上混合層中考慮波浪運動的能量平衡方程，探討了混合層中波?湍相互作用的物理機制，並對波浪破碎導致混合層內湍流混合加強和耗散增加的現象進行了分析。
  16. In this paper, based on summarizing previous numerical studies on wave transformations, several works are documented : based on the mass conservation equation and euler ' s equation, the extended form of boussinesq equations is derived by using the velocity at an arbitrary water depth as the independent variable, and several terms are added into governing equations to model the effects of bottom friction, wave breaking and subgrid turbulent mixing

    本文在總結概述前人關于boussinesq方程波浪數學模型研究進展的基礎上，主要做了以下幾點工作：從質量守恆方程和euler方程出發，以某一水層處水平速度矢量作為獨立變量，推導出包含底摩擦耗能、波浪破碎效應和子網格湍流效應的改進型boussinesq方程。
  17. And then, in the simulation of three - dimensional, the application of o - type grid and hybrid grid are used in two relatively complicated structures make the total amounts of grids and the time of grid generation reduced greatly. moreover the hexahedron grids are placed in most areas to provide higher precision. through the comparison between the results of two - dimensional and three - dimensional simulation, we knew two - dimensional calculating is not adequate

    本文用簡單、方便的二維模型作為數值計算的起點，使用耦合隱式演算法以及先進的v2f湍流模型進行求解，成功地捕捉到了激波，觀察到主氣流從壁面的分離、切換、再附壁等現象，並對計算結果進行了細致的分析，得出一些有意義的結論；在此基礎上，本文在國內外首次對超音速射流雙穩閥的三維流場進行了計算。
  18. 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。
  19. ( 1 ) the cfd model for the pulse combustion spray drying process. the computational fluid dynamics ( cfd ) based on the two - phase flow theory was employed in this paper, which used the standard k - e model and the particle trajectory model to simulate the gas - particle flow in the drying chamber. the momentum, heat and mass transfer regarding both gaseous and particulate phases during the spray drying inside the drying chamber was also revealed

    為解決這一難題，本文利用氣體一顆粒兩相流理論和計算流體力學（ cfd ）技術，建立了更符合實際噴霧乾燥過程的數學模型即噴霧乾燥的cfd模型，並進行了脈動燃燒噴霧乾燥過程模擬，其主要內容如下： （ 1 ）建立了脈動燃燒噴霧乾燥的cfd模型該數學模型建立在氣體一顆粒兩相流基礎之上，用標準k -模型預測乾燥室內的氣體湍流運動過程，顆粒軌道模型追蹤乾燥室內顆粒群的運動軌跡，熱質傳遞模型描述空氣和液滴的熱質傳遞過程。
  20. The main contents are including : based on the basic turbulence theory, the design of laser - guide - star system is given in detail

    論文工作可以概括為: 1 ）在簡要地介紹了大氣湍流基本理論的基礎上，對激光導星系統進行了詳細的設計和討論。
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