邊界層流 的英文怎麼說

中文拼音 [biānjiècéngliú]
邊界層流 英文
boundary layer flow
  • : 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...
  • : 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...
  • : 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...
  • : 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
  1. Such results are gotten : due to the unique topography the wind of beijing area during the day time is southern anabatic wind and in the night is northern katabatic wind in summer

    研究結果表明: 1北京區域夏季風場受西北特殊地形的影響,夜間低大氣場常表現為由北向南的下坡風,白天逐漸轉為由南往北的上坡風。
  2. The boundary layer thickness is a function of the convection condition, in the melt.

    厚度是溶體中對條件的函數。
  3. Studies of nonparallel stability of boundary layer

    邊界層流動的非平行穩定性研究
  4. In the boundary, velocity and reynolds stress was distorted greatly by the vortex that leaded to an upwash domain and a downwash domain

    傾斜角度和速度的變化將引起渦旋對影響范圍的變化。
  5. 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

    的形式包括二維和三維的均勻動、因地球自轉而引起的運動、切向動、對邊界層流、穩定和內部波動。
  6. Quasi - stationary state of convective boundary layer over heterogeneous flat surfaces

    平坦非均勻地面對的準定常態
  7. The ncep / ncar globally tropospheric 1 1 reanalysis data have been employed to select six landfall typhoon cases in order to diagnose variations of typhoon warm sectors in atmospheric boundary layer during their whole life periods

    摘要採用ncep / ncar全球對1 1再分析格點資料,選取6個登陸臺風個例,分析了不同發展階段臺風大氣暖區變化的特徵及其與強度變化的關系。
  8. 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泵的理論及對主區速度場的分析,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,將兩相泵的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體的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。
  9. The methods reported by g. s. young in 2000, are applied on sea surface sar images featured by three dimensional convective cells. then the following parameters are retrieved from sar images : the characteristic wave length of three dimensional convective cell, the mabl depth, the vertical convective scale velocity, the surface buoyancy flux, obukhov length and the stability correction factor for sar derived sea surface wind speed

    針對海洋大氣中三維對渦旋sar圖像,用g . s . young在2000年發表的方法,反演三維對渦旋的特徵長度、海洋大氣高度、以及海洋大氣垂直對尺度速度、表面浮力通量、海面風速穩定性校正因子和obukhov長度。
  10. Around 40 ; the neutral curve obtained by the growth rates of the temperature fluctuation has a ringlike curve separated from the main branch of nachtsheim s calculation by velocity fluctuation at the lower grashof number side ; and its phase velocity is close to the maximum mean velocity where the critical layer of the eigenmode locates. the thermal fluctuation decays rapidly as the nondimensional frequency above 0. 4, so that it means that the coupling effect between instability wave generated by buoyancy fluctuation and velocity waves by invicid instability seems weak enough for their critical layers in the range of the nondimensional frequency

    詳細研究了自然對中最早失穩的浮力振型的功率譜波長波速與臨位置等基本特徵和它為主導其他振型尚未失穩時按線性理論得到的3種相互獨立振型的振幅分佈。系統地測量了它所對應的溫度和速度漲落的振幅增長規律和中性曲線,實驗結果表明,溫度漲落的中性曲線在低格拉斯霍夫grashof數
  11. 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、及湍度等內容的場校測。特別對測量的原理及方法做了較詳盡的敘述,總結出厚度與設定風速、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。
  12. 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。
  13. When the plane was heated, observation showed that the shape factor increased from 1. 5 to 2. 6 ; the mean velocity profile departed from the law of the wall ; the inertial subrange in the energy spectra curves disappeared ; the intermittent phenomenon occurred

    發現在加熱的情況下,的形狀因子由1 . 5上升至2 . 6時均速度廓線中的平衡湍消失以及速度能譜中慣性子區消失等變化。
  14. The instability in the natural convection boundary layer initiates with the buoyancy eigenmode and develops into non - linear stage with the turbulization of the buoyancy eigenmode. in the mean time, the invisid eigenmode at the inflexion point appears and begins to increase at the outer layer. experimental results show that the turbulent layer near the maximum velocity point can be detected while the reformed grashof number

    自然對的穩定性由浮力振型失穩開始,並隨著浮力振型的湍化進入非線性階段,與此同時,無粘性振型在外開始失穩。實驗結果表明,修正格拉斯霍夫數grashof
  15. 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,採用雙體模型,分別建立液、固兩相的動量方程,它是固液兩相體的一般方程式;對其在邊界層流區內進行量級比較,得到動量微分方程並給出其條件,同時也得到固體顆粒在內所滿足的簡化方程及其解的表達式。
  16. The creative points of the thesis are as follows : ( 1 ) the thesis establishes turbulence boundary layer equation that contains centrifugal force in flow field of two - dimension boundary layer of centrifugal pump and gives its solution

    本文創新之處是: ( 1 )在離心泵葉輪二維邊界層流場內,建立了包含離心力的湍方程並給出了近似解。
  17. 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。
  18. 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狀態的形狀因子更小等。
  19. An experimental study on the turbulent boundary layer flow field and its noise

    邊界層流場與噪聲實驗研究
  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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