rotational flow 中文意思是什麼

rotational flow 解釋
環繞流
  • rotational : adj. 1. 旋轉的；輪流的，循環的。2. 【農業】輪作的。
  • flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
  1. In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane

    本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。
  2. ( 2 ) the results reveal that the pre - swirl ratio has a great influence on the flow field of the rotating disk, even greater than the rotational reynolds number, and an initial constant is induced in moment coefficient cm and average nusselt number nuave correlations, which does not exist in the case of without pre - swirl

    （ 2 ）分析了預旋系數_ r對該旋轉盤腔流場的影響，定義了一個新的壓力系數c _ p ，該壓力系數c _ p沿徑向位置的變化對特定的旋轉雷諾數re _是一個常數。
  3. It is also pointed out that the shear stress along the flow - in direction existing near the junction of straight and curve edges is one of the major components of drawing pressure, and it is very important in the calculation of drawing load of non rotational symetrical drawing

    並且指出，法蘭直、曲邊交界附近存在的流入方向剪切力是拉深力的主要成分之一，在非回轉對稱拉深載荷的計算中非常重要。
  4. It is possible for small equipment to carry our large - scale production ; 5. there are rotational flow pieces inside the drying chamber. it is used to control the moisture and granule of raw material to the needed level

    乾燥室上部加裝淘析環及旋流片可以控制出口物料的粒度及濕度，以達到不同物料的終水份粒度的要求。
  5. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  6. The generating and controlling system of the upstream runoff, downstream tidal current and rotational flow in the physical model test for the yangtze river estuary deep channel training project is introduced

    摘要介紹了長江口深水航道整治工程物理模型試驗中配置的上、下游潮汐及旋轉流發生和控制系統。
  7. By adopting the iodide - iodate reaction system as an index, the distribution of segregation index ( x ) along the radial direction of packing and the effects of different operational conditions ( e. g. rotational speed, flow rates ) on micromixing efficiency of a novel rotating packed bed ( rpb ) have been investigated

    通過設計一臺能實現沿程取樣的旋轉填充床，同時通過採用一種平行競爭微觀混合體系碘化物碘酸鹽反應體系，考察了填料的不同徑向位置離集指數的分佈及各操作參數對旋轉填充床微觀混合效率的影響。
  8. The flow equations are solved using finite difference technique. using body - fitted curvilinear coordinate system treated the boundary conditions. by iteratively solving the flow governing equation and the blade equation, the design of axial flow pump impeller in the quasi - three - dimensional rotational flow can be performed according to the angular momentum distribution, the blade which was designed in the lifting method, flow channel and the blade thickness given

    其次在流動無粘性、不可壓及考慮葉片厚度的條件下，依據葉輪內的流動特性，推導了葉輪內三維流動周向平均流動控制方程以及葉片方程；在貼體坐標系中，採用有限差分法求解流動方程和葉片方程；在採用升力法設計出的葉片作為初始葉片、給定葉片速度矩分佈、葉片厚度分佈和葉輪軸面流道幾何形狀條件下，迭代求解流動控制方程及葉片方程，實現了軸流泵葉輪的準三維方法設計。
  9. Theoretical research on the rotational dispersion coefficient of fiber in the turbulent shear flow of fiber suspension

    纖維懸浮剪切湍流中纖維旋轉擴散系數的理論研究
  10. The system included 2 rotational speed measurement channels, oil flow measurement channels, 8 pressure measurement channels, which are based on pci bus in a industrial computer. the system software realized functions of which parameters are measured and states are monitored

    整個系統包括轉速測量通道2個、燃油流量測量通道2個、壓力測量通道8個，基於pci總線，在工控機上運行，由相應的系統軟體實現參數測試與狀態監視。
  11. Some results acquired by computer calculation show that the rigid garnet pophyroblasts can rotate as their matrix flow, and the rotational degree depends on the shear force, ratio of poephroblasts to matrix and the locations of porphyroblasts in the model

    計算結果表明：剛性的石榴石斑晶會隨著基質的流動而產生旋轉運動，旋轉量的大小取決于剪切力的大小斑晶的密集度以及斑晶在剪切帶中的位置。
  12. Ownership is a form of attachment that begins to be transmuted by the new rotational energy flow as this tone is mastered in one ' s ascent

    佔有是一種連接形式，當結構音調在提升中掌握時，就開始被新的旋轉能量流改變。
  13. In embodying the structure tone of lavender, one embraces a new energy flow that is rotational in nature

    在融合入淡紫色的結構音調時，一個人融合了本質上旋轉的新能量流。
  14. Vorticity is a physical quantity measuring the rotational sense and speed of a fluid flow

    渦度，是表示氣流的旋轉程度和旋轉方向的一個物理量。
  15. The cavitation characteristics of mixed flow pump during starting period, relations between cavitation performance and flowrate, rotational speed and impeller parameters were discussed

    討論了啟動過程的汽蝕特性以及混流泵汽蝕性能與流量、轉速、葉輪參數的關系。
  16. Surface active agents. determination of flow properties using as rotational viscometer

    表面活性劑.用旋轉粘度計測定流動性能
  17. The points will press energy up and then into a rotational flow that will orchestrate a rainbow in one ' s environment

    礦石柱將把能量壓出來成為圓形能量流，從而在你的環境中組合成一條彩虹。
  18. The influences of disk rotational speed, mass flow rate of inlet and presence of the blade - cooling holes on the flow characteristics in the cavity were investigated

    結果表明：在本實驗范圍內，靜盤表面靜壓沿半徑方向先減小，后增大。
  19. Surface active agents - determination of viscosity and flow properties using a rotational viscometer

    表面活性劑用旋轉式粘度計測定粘度和流動性質的方法
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