邊界層流動 的英文怎麼說

中文拼音 [biānjiècéngliúdòng]
邊界層流動 英文
boundary layer flow
  • 邊 : 邊Ⅰ名詞1 （幾何圖形上夾成角的直線或圍成多邊形的線段） side; section 2 （邊緣） edge; margin; oute...
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
  • 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...
  • 邊界 : boundary; frontier; border; borderline; edge range line; periphery
  • 流動 : 1. （液體或氣體移動） flow; run; circulate 2. （經常變換位置） going from place to place; on the move; mobile
  1. Studies of nonparallel stability of boundary layer

    邊界層流動的非平行穩定性研究
  2. The regimes of turbulence include homogeneous flows in two and three dimensions, geostrophic motions, shear flows, convection, boundary layers, stably stratified flows, and internal waves

    擾流的形式包括二維和三維的均勻流動、因地球自轉而引起的運動、切向流動、對流、邊界層流、穩定層流和內部波動。
  3. In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design

    第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。
  4. Using the system designed in this thesis work, flow field calibration of the wind tunnel is accomplished, which covers dynamic pressure drop coefficient, dynamic pressure time stability, axial static pressure gradient, boundary layer, and degree of turbulence, etc. boundary layer measuring principle and method are especially described in detail, the relationship between boundary layer thickness, wind speed setting, and the depth of the experimental section is summarized, and finally the calibration data for th e model center zone under specific wind speed are given

    然後利用本文設計的系統完成了落差系數、動壓時間穩定姓、軸向靜壓梯度、邊界層及湍流度等內容的流場校測。特別對邊界層測量的原理及方法做了較詳盡的敘述，總結出邊界層厚度與設定風速、實驗段深度的關系，然後給出模型中心區一定風速下校正數值。
  5. Fluid experiment ; buff body aerodynamics ; wind engineering ; wind loading on buildings and structures ; modeling wind in an atmospheric boundary wind tunnel ; pedestrian - level wind environment ; wind effects on the efficiency of air - cooled condenser in a large power plant

    實驗流體力學，鈍體空氣動力學，風工程， 、建築物和結構物的風荷載研究，大氣邊界層風洞模擬，行人高度風環境，大型電站空冷系統風效應風洞模擬。
  6. Due to its complexity of the problem, the theories and experiment results obtained are discrepant, and some of them are even contrary one another. started from the influence by movement rules of small cavities and solid particles, the mechanisms of combined effect of cavitation and sand abrasion are study in this thesis from the aspect of the turbulent coherent structure near the wall. first, a dynamic equation is established for a single spherical bubble and single spherical sand under the non - turbulent coherent structure near the wall, and then a dynamic equation established under the turbulent coherent structure near the wall

    首先從理論上推導出在典型湍流邊界層模式的非擬序結構下空泡與固體顆粒的近壁區運動方程，然後推導出湍流近壁擬序結構作用下的空泡與固體顆粒的近壁區運動方程，再將兩種不同條件下的的運動方程進行比較，指出湍流近壁區的擬序結構對空蝕與磨損的發生具有決定性的意義，即正是由於擬序猝發作用的存在，才使得空泡、沙粒對壁面的空蝕與磨損作用得以發生。
  7. The model simulations indicate that the severe storm is occurred in the pattern high - level of northwest flow, the waterjumping downhill flow form taihang mountain is the key mechanism to initiate the convective, on the other hand, the terrain can induce unbalanced low - level flow, which play an importance role in generating the mesoscale gravity waves ( mgws ) by convergence and divergence in low - level troposphere

    （ 2 ）太行山對華北強對流風暴的發生有重要作用。一方面，地形可引起邊界層風場的變化，包括風垂直切變、下坡氣流和中尺度輻合線，從而對風暴的啟動、組織和移動發揮作用；另一方面，山脈背風波動和地形產生的不平衡氣流，有利於中尺度重力波（ mgws ）的產生和維持，並對下游地區強對流天氣的發展產生影響。
  8. Beyond the boundary layer, the motion is highly irregular.

    超出邊界層以外，流體的流動非常沒有規律。
  9. The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation

    結果表明：在中高層暖性高壓脊及地面變性冷高壓穩定維持的大尺度背景條件下，地表凈輻射引起的近地層冷卻是大霧過程的觸發和加強機制；中低空下沉氣流的存在有助於近地層的弱風條件和穩定層結的建立；低層暖平流的輸入和邊界層的淺層抬升是大霧長時間持續的原因；伴隨冷空氣南下的偏北大風是驅使大霧消散的動力因子。
  10. As the moving particle in the turbulence boundary layer, the resistance on microbubble from water may be fallen inside the scope of the stokes law

    作為湍流邊界層中運動的粒子，微氣泡受到水的阻力可能會在stokes阻力范圍內。
  11. In chapter two, according to n - s equation, considering the couple between liquid and solid, the double - fluid model is used to respectively set up momentum equations of two - phase fluids in condition of basic hypothesis, which are general equations of two - phase fluids. simplifying the equations in boundary layer, the momentum differential equations are required and the boundary conditions are given. in the same time, the simplifying equations and their solutions, in which solid grain satisfies in boundary layer

    第二章依據n - s方程，考慮到液、固之間的相間耦合，在基本假設條件下，採用雙流體模型，分別建立液、固兩相的動量方程，它是固液兩相流體的一般方程式；對其在邊界層流區內進行量級比較，得到邊界層動量微分方程並給出其邊界條件，同時也得到固體顆粒在邊界層內所滿足的簡化方程及其解的表達式。
  12. Momentum integral equation of turbulent boundary layer on ogree section of spillway dam in considering the gravity and centrifugal force

    考慮重力及離心力的溢流壩反弧段紊流邊界層動量積分方程
  13. In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation

    本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。
  14. In the thesis the low drag - low noise optimization of the vehicle main form design is realized, main accomplishments are as follows. researched the knowledge of drag and flow noise, the parameters of the boundary layer are calculated by the hess - smith method and boundary layer momentum integral method. the calculation of the length of transition zone and change in boundary layer displacement thickness between laminar and turbulent states in the transition is improved, then the drag coefficient and self - noise from the transition zone are calculated as the objective functions of the optimization

    主要研究內容和成果如下：對航行器繞流流場進行分析，深入研究了阻力和流噪聲產生機理，建立了阻力系數和自噪聲的評估數值計算模型；採用物面分佈源匯法和邊界層動量積分法對繞流流場的流體動力參數進行計算，改進了轉捩區長度和邊界層位移厚度的計算，應用於航行器頭部駐點自噪聲的計算；最後設計了阻力系數和自噪聲數值計算程序模塊。
  15. The simulation results reveal that water vapor transportation northward is responsible for the generation of the convective instability in south shandong, and the easterly wind from sea, gravity wave and convergence generated by southward invasion of weak cold air in pbl play main role in trigger, transmission and enhancement of convective systems

    定性地給出了中尺度對流系統氣流運動的圖像，即：在邊界層，氣流從東南方向斜升流入中對流區，在系統中垂直上升，約在7000米一9000米高空向東北方向流出，形成非閉合的垂直環流。
  16. Perturbation analysis of boundary layer on liquid phase fluid centrifugal pump

    液相流離心泵邊界層的攝動分析
  17. A separation in the boundary layer of fluid about a moving streamlined body, such as the wing of an airplane, causing a breakdown in the smooth flow of fluid and resulting in turbulence

    氣流分離移動的流線型的軀體上流體邊界層上的分隔物，如飛機的機翼，在平滑的流體流動中會引起故障和湍流
  18. The direct numerical simulation methods for turbulent spots in the channel, open - channel and boundary layer flows are built respectively. effective algorithms composed of time - advancing, over - relax iteration and multiple grid methods are planned to raise computational efficiency

    分別建立了適用於在槽道、明渠和平板邊界層流動中直接模擬湍斑的數值方法，並精心設計了時間推進、超鬆弛迭代和多重網格等高效演算法，以提高計算效率。
  19. The micro boundary layer experiment is carried out from 8mm to 14mm of a 15mm - long micro plane. re numbers vary from 35, 000 to 150, 000 and 4 different mach numbers are selected. some new characters are discovered, such as velocity curve factor is smaller than that of well developed normal scale turbulence boundary layer

    微尺度平板邊界層實驗選取從總長度為15mm的微平板前緣8mm到14mm之間的7個站位， 4種馬赫數， 13個不同雷諾數（從35000到150000 ）的實驗狀態，發現了該尺度下邊界層流動的一些新的特點，如形狀因子比常規大尺寸下充分發展湍流狀態的形狀因子更小等。
  20. Then, only a given curve satisfied by the conditions of import and outlet of vane wheel as its modular curve will neglect the middle varying processes of in vane wheel, which reflect microscope properties in some degree - flow properties in boundary layer. leading into the velocity - coefficient unifies the boundary layer and eular theory in the design process of vane, which extends the area of selection of vane ' s curves and provides a valuable object function for the optimization design of vane

    那麼，僅憑一條預先給定的滿足葉輪出入口條件的曲線去來作為葉輪的型線，它必將忽略了這種除了葉輪出入口之外的中間變化過程，而這種中間變化在某種程度來說又反映出微觀特性? ?邊界層流動特性；速度系數的引入，它使邊界層理論和歐拉理論在泵的葉輪設計過程中得到統一；它使選擇葉片曲線的域圍拓寬；它也為葉輪的優化設計提供了一個很有參考價值的目標函數。
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