螺旋流動 的英文怎麼說

中文拼音 [luóxuánliúdòng]
螺旋流動 英文
helicoidal flow
  • 螺 : 1. [動物學] （軟體動物） spiral shell; snail; conch 2. （螺旋形的指紋） whorl （in fingerprint）
  • 旋 : 旋Ⅰ動詞1 （旋轉） whirl 2 （用車床切削或用刀子轉著圈地削） turn sth on a lathe; lathe; pare Ⅱ名詞...
  • 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...
  • 螺旋 : 1 （具有螺紋的圓柱體 屬于斜面類的簡單機械） corkscrewspin; screw; spiral; helix 2 （螺旋現象;尾旋...
  • 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. In the core, coriolis forces deflect the upwelling fluid along corkscrewlike, or helical, paths, as though it were following the spiraling wire of a loose spring

    在地核中，科氏力使涌升的流體沿著像開酒瓶器的螺旋路線上升，彷佛順著彈簧的螺旋線圈移動。
  2. Counterflow vibrating screw feeder

    逆流式振動螺旋給料機
  3. 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。
  4. The propeller turns a small d. c. generator.

    螺旋槳帶動一個小型直流發電機。
  5. On the other hand, it is indicated that the velocity field consists of a depth - independent inertial oscillation and a time - mean shear flow, which can be obtained by subtracting the inertial oscillations time mean in one inertial period. the hodograph of the velocity vector of time - mean flow at the different depths consists of a ekman spiral, and the surface velocity is 30. 3 ? to the right of the wind

    一維模式的流場結果表明，混合層中的流場是由慣性波動與時間平均流兩部分疊加而成，且通過時間平均消去慣性波動后得到平均流，其不同深度的流速矢量構成一ekman螺旋，表層流速矢量相對風向右偏了30 . 3 』 。
  6. Compared to an ordinary rudder, the value of lift coefficient of ichthyoid rudder is about 30 % higher and the maximum rudder angle of it nearly reaches 45 degrees. ichthyoid rudder is a design under such a conception as to effectively utilize the propellers slipstream for rudder action, and featured by having a fish - shaped one - piece construction that is to say - no part of ichthyoid rudder can move in the water

    其研究的魚形舵是一個沒有在水下移動的魚尾形剖面單片結構，增加了全舵的剖面拱度，使螺旋槳尾流的折射水量增強，進而增大了水動力的作用，使之比普通流線形舵的升力提高30左右。
  7. Using a vortex - flow drop shaft to convey water from a high level to a diversion runnel under the condition of high water - head and large discharge is a new kind of technology in the scheme of reusing a diversion tunnel as a discharge tunnel

    近年來，為解決高水頭、大流量導流洞改建泄洪洞的技術難題，旋流式豎井泄洪洞逐漸成為研究熱點之一。但迄今為止，該技術尚未得到推廣應用，其主要原因在於人們對豎井螺旋水流運動特徵缺乏足夠的了解和深入的研究。
  8. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  9. Woven wire mesh series : stainless steel wire mesh, brass wire mesh, copper wire mesh, phosphor bronze wire mesh, barbecue grill mesh, crimped wire mesh, low carbon steel wire mesh, mild steel wire mesh, black wire cloth, window screening netting, vibrating sieving mesh, filter for gas and liquid, conveyer belt, chain link fence, galvanized square wire mesh, hexagonal wire mesh

    此網帶由雙股右螺旋或由雙股左螺旋盤條與一根串條連接而成，網帶拼接方便，網眼一般小於單股加強編織的網眼，編織牢固，不易變形，維修方便。能用於高溫的自動流水線，輸送重物，機械工業上零件的熱處理，各種較大物品的烘乾。
  10. The corrosion current and impressed against - corrosion current of a ship modulated by shaft ' s rotation will generate an extremely low frequency electric field ( elfe ) which becomes a kind of important characteristic signal in sea water

    摘要艦船的腐蝕和防腐電流經螺旋槳轉動的調制后在海水中會?生極低頻電場，成?一種重要的特徵信號源。
  11. The instrument is supported by a test fixture with cold - wall thermal radiators. copper coils attached to the radiators circulate liquid and gaseous nitrogen to vary the instrument temperature

    感覺這個變溫設備就像平常的暖氣片一樣，不過螺旋管中流動的是液態或者氣態的氮。它還配備有變溫和控溫裝置。
  12. The following results are obtained : ( 1 ) the flow in rotating helical pipes are affected by dean number, curvature, torsion ( or germano number ), the ratio of the coriolis force to the centrifugal force f number ( or rossby number ) and the geometry of the cross section

    研究結果表明： （ 1 ）旋轉螺旋管道流動特性受dean數、曲率、撓率（或germano數） 、科氏力與離心力之比f數（或rossby數）以及截面的形狀五種因素的影響。
  13. Chiu and seman(1971)studied the head loss of flows transporting sediment in circular and square pipes with spiraling motion.

    邱和思門（1971）研究了在圓管和方形管中輸沙時具有螺旋運動的水流的水頭損失問題。
  14. Spiral flow test

    螺旋流動試驗
  15. Even slight spiraling motion in a square pipe increases the tendency of particles to be maintained in suspension.

    水流在方管中稍有一些螺旋運動，將增加泥沙懸浮在水中的作用。
  16. Chiu and seman ( 1971 ) studied the head loss of flows transporting sediment in circular and square pipes with spiraling motion

    邱和思門（ 1971 ）研究了在圓管和方形管中輸沙時具有螺旋運動的水流的水頭損失問題。
  17. Spiral ( swirling ) flow is a sort of special and regular vortex movement

    螺旋流是湍流中一種特殊的、規則的渦旋運動。
  18. Swirling flow is one of the fashions which often appears in our everyday lives and nature. swirling flow is a very complex flow because of the streamline curvature and the skewness of the velocity vector

    螺旋流問題是日常生活和生產實踐中經常出現的一種流動形式，由於流線彎曲、流動斜交，使流動變得十分復雜。
  19. By means of experimental measurements, development and formation of the spiral flows in pipes were studied in this dissertation. also the influence of kinds of parameters and entrance condition were investigated

    本文主要通過實驗測量的手段研究管內螺旋流的形成與運動規律，以及螺旋流發生裝置的幾何參數、入口條件等對螺旋流的形成和發展產生的影響。
  20. A program is produced to simulate the particle ' s tracks in swirling air flow in a horizontal straight pipe and find that the tendency of particle migration towards pipe center is not affected by initial position of a particle and all particles are sent into pipe by the axial motion of the swirling flow

    編程計算顆粒在管中螺旋氣流的運動軌跡，數值結果表明，無論顆粒初始位置如何，所有顆粒都被推向軸心位置，並被螺旋流的軸向運動推入管中。
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