annular flow 中文意思是什麼
annular flow
解釋
環流-
For the first category, we consider the boundary flow as an annular zone completely isolated from mixing with the main flow environment.
對于第一個范疇，我們把邊界看作是完全隔離的環形區域，並不與主流環境相混合。 -
Numerical simulation of eccentric annular tube flow
偏心環狀管流的數值模擬 -
Standard specification for 12 to 60 in. 300 to 1500 mm annular corrugated profile - wall polyethylene pipe and fittings for gravity - flow storm sewer and subsurface drainage applications
自流式雨水管和地下排水裝置用12至60英寸300 to 1500 mm環形波紋狀異型壁聚乙烯管和配件的標準規范 -
Theoretical study for evaporative heat transfer of annular two - phase flow of liquid film and high - velocity air in vertically heated tubes
高速空氣環狀兩相流的蒸發換熱特性理論分析 -
Employing perturbation method and numerical simulation, we study the flow in rotating helical pipes including different rotations, different cross sections ( circular, elliptical, annular and square cross section ), and different geometrical structures
採用攝動方法和數值計算方法，研究了處于多種旋轉狀態下、多種截面形狀（圓截面、橢圓截面、環形截面、矩形截面） 、不同幾何結構旋轉螺旋管道流動。 -
When f is about fr, for curved pipes, the secondary flow appears eight vortexes for annular cross section and four for circular and four or six for elliptical ; for helical pipe, the secondary flow appears as a loop flow for annular and circular cross section, and a saddle flow for elliptical cross section
當f在fr左右時，對于彎管，環形截面上存在八個渦，圓截面上存在四個渦，橢圓截面上存在四個或六個渦；對于螺旋管，圓截面和環形截面上二次流表現為環流，橢圓截面上表現為鞍流。 -
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。 -
According to the working modes of mr devices, combining the ohm ' s law of magnetic circuit and the design theory of non - steady magnetic circuit, magnetic structures of the automotive damper have been worked out. to emulate the performance of conventional shock absorber, two automotive mr dampers were designed and fabricated at chongqing university. an applied magnetic field increase the yield stress of mr fluids in flow annular passages, which alters the velocity profile of mr fluid in the passages and raise the pressure gradient between low cavity and high one at some given flow rates
根據磁流變阻尼器工作模式，利用磁路中的歐姆定律和動態磁路設計原理，結合汽車懸架的技術要求和結構特點，提出了基於剪切模式和流動模式共同作用（混合工作模式）的汽車磁流變阻尼器設計原理，討論了阻尼器動態磁路設計中的若干技術問題；根據流體力學navier - stokes方程，分別利用newton流體特性和bingham流體特性，推導了基於平板模型和軸對稱模型的流變學方程，得出了阻尼器阻尼力的計算方法。 -
Experimental research on dryout point of flow boiling in narrow annular channel
環形窄縫通道內流動沸騰乾涸點的研究 -
Based on these models, the differential pressure fluctuation signals of gas - liquid two - phase flow under different flow regimes in various diameter pipelines are analyzed. experimental results show that the autoregressive orders of bubble flow and annular flow are bigger than that of slug flow
對不同管徑不同流型下的差壓波動信號進行了建模，在此基礎上分析得出：彈狀流流型下arma模型的階數n最小，泡狀流和環狀流流型下的arma模型階數n較大。 -
In this paper, the transition from churn flow to annular flow for upward gas - liquid in vertical concentric annulus is studied and a transition model is developed by considering the structural feature of the concentric annulus and the flow characteristics for churn and annular flows in the concentric annulus
根據團狀流及環狀流的流動特性，並考慮同心環形管的結構特徵，建立了垂直同心環形管上升氣液團狀流向環狀流轉換的新的理論模型。 -
Numerical simulation for corrugation and annular flow field of a stratification injection allocator
分層配注器波紋環空流場的數值模擬 -
The experimental results show that the method is effective to identify the flow patterns of bubbly, plug, stratified, wavy, slug and annular in a horizontal pipe. the identification accuracy is shown as follows : bubbly flow is 93. 3 %, plug flow is 85. 3 %, stratified or wavy flow is 97. 3 %, slug flow is 98. 6 %, and annular flow is 92. 7 %. an estimation of the process time is 22 frame / s
實驗結果表明，該方法能自動有效地識別水平管道內的氣泡流、塞狀流、層狀流、波狀流、彈狀流和霧環狀流等基本流型；識別準確率如下：氣泡流為93 . 3 ，塞狀流為85 . 3 ，分層流為97 . 3 ，彈狀流為98 . 6 ，霧環狀流為92 . 7 ；識別圖像速度約為22幀秒，適合於在線實時識別兩相流流型。 -
It is pointed that the failure of this model in predicting the transition stems from the non - objective of the momentum balance relationship of smooth annular flow
由此闡明了該模型難以正確預測微重力條件下氣液兩相彈環狀流轉換條件的原因在於光滑環狀流動量平衡關系的非客觀性。 -
A detailed analysis on the characteristics of the solution of the void fraction matched model for the slug - to - annular flow pattern transition at microgravity condition, which is based upon the drift - flux raletionship of slug flow and the momentum balance relationship of smooth annular flow, is presented
摘要對基於微重力條件下，氣液兩相彈狀流滑移流率關系和光滑環狀流動量平衡關系的彈環狀流轉換空隙率匹配模型的解的特徵，進行了深入分析。 -
The static and dynamic test results showed that the new method is effective and the identification results of stratified flow, annular flow, core flow and plug flow are satisfied for the requirements of the industrial operation online
該方法與傳統流型識別方法相比的最大特點是簡便易行，對于層狀流、環狀流、核心流以及塞狀流均有較好的識別結果。 -
The accuracy of flow pattern identification of stratified flow, annular flow, core flow and homogeneous flow is more than 95 % and the time for flow pattern identification is less than 0. 15 second
對于均相流、層狀流、核心流和環狀流等流型辨識的準確率高於95 ，判別一個流型耗時小於0 15秒。塞狀流的辨識準確率高於90 。 -
Flow characteristic of gas - liquid two - phase annular flow through annular narrow passage
環形狹縫通道內氣液兩相環狀流流動特性 -
Analysis of two - phase annular flow convective evaporation in horizontal microfin - tube
水平微翅管內環狀流兩相強制對流蒸發換熱的計算模型 -
Churn flow and annular flow are common flow patterns encountered in gas - liquid systems through conduits
摘要對垂直同心環形管內上升氣液團狀流向環狀流的轉換進行了研究。
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