vortex flow 中文意思是什麼

vortex flow 解釋
渦流, 有旋流
  • vortex : n. （pl. vortexes,-ti-ces ）1. 旋渦；旋風；旋卷行雲。2. 【物理學】渦旋；【航空】渦流；【動物；動物學】〈V-〉 單腸渦蟲的一屬。
  • 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. 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。
  2. And the paper analyzes the physical reasons that the supersonic flow of fadw degrades the optical quality. and the structure of free - vortex jet of fadw is studied using the methods of shadowgraph and lsi, respectively

    並利用陰影法和剪切干涉法對該窗口的射流流場結構進行了實驗觀察和測量，對其所涉及的氣動光學現象進行了相應的實驗測量和分析。
  3. 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。
  4. The main research outcomes were as follows : ( 1 ) the paper applied quasi - three dimensional design model and optimization design model based on si flow surface that was effected by runner ( impeller ) and guide vane jointly. the vortex flow, blade thickness limitation and runner ( impeller ) blade force functions were taken into account. the paper got the improved runners of hl240 type, which were runner hlx240d and runner hlx240e

    主要成果有： （ 1 ）應用考慮轉輪來流有旋、葉片有限厚及轉輪（葉輪）葉片力作用的轉輪（葉輪）與導葉聯合作用的基於s _ 1流面的準三維設計模型和優化設計模型，研究出了hl240的改進型轉輪： hlx240d和hlx240e 。
  5. The experimental and numerical studies on the two enhanced tubes are performed. the strong multi - longitudinal vortex flow in the aea - tube is induced by alternating change of the elliptical cross - section, and for the ddir - tube, the strong multi - longitudinal vortex flow is

    交叉縮放橢圓管是通過橢圓截面的交叉變化誘導產生強烈的二次流和多縱向渦流，而不連續雙斜向內肋管則是通過不連續的雙斜向內肋對的作用形成強烈的多縱向渦。
  6. The research progress of four kinds of continuous emulsion polymerization reactors : continuous stirred tank reactor, continuous loop tubular reactor, pulsed packed column and couette - taylor vortex flow reactor were reviewed with 14 references

    摘要介紹了4種主要連續乳液聚合反應器的研究新進展，包括連續攪拌釜式反應器、連續環管式反應器、脈沖填料塔式反應器及庫愛特泰勒旋流式反應器。
  7. And then experiments of compensation for the aberrant wave front caused by fadw ' s free - vortex flow are studied using our 37 - elements adaptive optical system

    利用實驗室現有的一套室內37單元自適應光學系統對fadw的輸出激光進行了初步的校正實驗，並進行了相應分析。
  8. Fluid flow in pipes using vortex flow meters, measurement of

    用渦流流量計測量管道中的液體流量
  9. Integrated vortex flow transducer

    電磁式渦街質量流量計的開發
  10. The vortex flow measurement device of dn150 field petroleum pipeline

    150裝配式管線渦街流量檢測裝置研製
  11. The numerical analysis indicates that that the multi - longitudinal vortex flow in tubes can markedly enhance both the laminar and turbulent heat transfer with less additional increase of flow resistance

    結果表明，管內多縱向渦對層流和湍流換熱的強化效果顯著而流阻增加較少，具有優良的綜合強化換熱性能。
  12. A novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields

    介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景
  13. Abstract : a novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields

    文摘:介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景
  14. Large eddy simulation of vortex flow of molten steel in continuous casting mold

    連鑄結晶器內鋼液渦流現象的大渦模擬
  15. Development of electromagnetism vortex flow energy dissipation tmd devices and test study on its property

    電磁渦流耗能調諧質量阻尼器研製與性能試驗
  16. Abstract : an experimental investigation of local scour around a new type bridge pier under a clear water regime is presented. the main characteristic feature of flow is relatively large horseshoe vortex flow along the circumference of the pier. and the procession of scour is discussed in this paper. equation for predicting the depth and area of local scour hole is presented. it is significant for evaluating the potential for scour around this type pier

    文摘:介紹了一種新型橋墩即多腹薄壁墩的局部沖刷試驗成果.認為橋墩周圍的水流以繞流橋墩的相對較強的馬蹄型漩渦系為主要特徵.並討論了沖刷過程，給出了預測沖坑深度及大小的關系式，可供估算同類型橋墩的沖刷參考
  17. The company, after many years of exploration, research, for the existing market demand and successfully developed : twdj series turbine mill, the tcm series vortex flow ultrafine grinding mill plastic tfsm series, tcwm series super swirl polishing, tldj series screen shaft extruder - mill equipment, and other varieties of sets of mechanical equipment

    本公司經過多年的摸索，研究，適合現有市場的需求，成功開發出： twdj系列渦輪式粉碎機， tcm系列氣流渦旋超微粉磨， tfsm系列塑料粉碎機， tcwm系列超級渦流磨， tldj系列無篩立軸式粉碎機擠塑式設備等多個品種成套機械設備。
  18. The butterworth wavelet filter with good magnitude - frequency characteristics is adopted to process the vortex flow signal, and the fundamental frequency of signal is estimated effectively. the algorithm is implemented in a digital signal processing system based on a tms320vc5409 dsp chip, and its effectiveness is proved

    採用幅頻特性較好的iir型butterworth小波濾波器，處理渦街流量信號，估計基頻，並在以tms320vc5409為核心的渦街流量計數字信號處理系統上實現，證明其方法的有效性。
  19. The numerical solution shows that the optimal velocity field for laminar convective heat transfer in tubes is multi - longitudinal vortex flow

    數值求解表明，管內層流對流換熱的最優速度場為多縱向渦流態。
  20. Consequently, a field coordinated enhancement method by longitudinal vortex flow for convective heat transfer enhancement in tubes is presented

    提出了採用多縱向渦強化管內對流換熱的場協同強化方法，並進行了數值分析。
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