pipe flow 中文意思是什麼
pipe flow
解釋
管道憐-
The 3 - d numerical simulation on bifurcated pipe flow
三岔管水流數值模擬研究 -
Effect of pipe flow on interflow on granite slope in three gorges area of yangtze river
長江三峽花崗巖坡面管流在壤中流中的作用 -
Experiment on the pressure drop of crude oil - water pipe flow
水管流壓降規律實驗 -
The pipe flow behavior of water suspensions of wood pulp and synthetic fibers has been the subject of many investigations.
木質紙漿和合成纖維的水懸浮液的管道流動特性已有許多專題論文發表。 -
When soil antecedent condition is dry and the initial rainfall intensity is high, peak surface runoff also considerably lag behind that of rainfall, because of the formation of temporary relative impermeable top layer ; b ) surface runoff is controlled primarily by infiltration - excess runoff mechanism under unsaturated condition ; the major fraction of surface runoff are dominated by saturated infiltration - excess runoff response, only a small fraction by return flow mechanism when soil is saturated ; c ) subsurface flow is dominated by saturated runoff mechanism, and the duration of subsurface post the rainfall end is dependent upon rather the soil properties than the rainfall characteristics ; d ) subsurface flow intensity in cultivated soil layer ( 0 ~ 20cm ) is high up to 35mm / h when rainfall intensity is up to 120mm / h, indicating the existing of macropores and pipe flow in cultivated layer
2 ）耕作制下紫色土的產流主要機制是： 1 ）當雨前土壤含水量未達到飽和狀態時，表面產流起始時間有明顯滯后現象，這與紫色土的快吸水性和較多非毛管孔隙密切相關；當雨前土壤較乾燥，降雨初期雨強較大時，易形成臨時相對不透水表層，表面產流峰也有明顯滯后現象。 2 ）表面徑流的產流方式主要是超滲產流，當土壤達到飽和狀態后，有四川大學博士學位論文小部分回歸流發生，但主要是飽和超滲產流發生，因為紫色土的相對不透水層和其它透水障礙層不明顯。 3 ）壤中流主要是飽和產流，與降雨過程有明顯的滯后，而且雨停后的壤中流產流歷時與降雨特徵無關。 -
Direct numerical simulation of spatial evolutional transition in pipe flow
空間發展圓管轉捩的直接數值模擬 -
The effects of tripping annulus on a pipe flow and a channel flow were compared and analysed. it indicated that the effect on both flow are mostly identical
全面比較了入口擋環對管流和渠道流中湍流發展過程的影響，發現兩者在多方面均存在著一致性。 -
The effects of the different tripping size were not alike, 20 % tripping annulus was the best size for a pipe flow to obtain fully developed turbulence in the experiment. 8
不同尺寸的擋環對流動中心處相對湍流強度的影響不同，實驗結果表明， 20擋環是形成充分發展圓管湍流的最佳尺寸。 -
3. based on the wall equation and k - ? model, the variable c ? and the variable lm were used to improve the numerical simulation of pipe flow with the tripping annulus at the inlet
在壁函數和-模型的基礎上，採用了變模型常數c _ （ l ）和變混合長度l _ m的方法對入口處帶有擋環的圓管湍流模擬計算進行了修正。 -
In accordance with different tripping annulus at the inlet, the numerical simulations of the reattachment length were performed with the " variable c ? " model. in the range of experimental reynolds number, the tripping effect on the reattachment length was developed in the figure. the dependence of the reattachment length on reynolds number was also analysed in the different status of pipe flow
利用變模型常數的-模型針對不同尺寸的擋環進行了再附著長度的模擬計算，在實驗雷諾數范圍內，建立了入口處擋環對再附著長度影響的變化曲線，分析了再附著長度在不同的管流流動狀態下相對于雷諾數的變化情況。 -
The goal of this paper is to study fully developed turbulent pipe flow. with the aid of the tripping annulus at the inlet, based on the experimental investigation and numerical simulation, detailed researches on a few basic rules in pipe flow have been performed, such as mean velocity profile, relative intensity of turbulence, the log - law, von karman ' s constant and reattachment length, thus filling some gaps in the research work of predecessors and obtaining a far - reaching understanding
本文的目的就是利用入口擋環進一步探索充分發展的圓管湍流，通過實驗和數值模擬對圓管湍流的若干基本規律，如平均速度分佈、相對湍流強度、對數定律、馮?卡門常數和再附著長度等進行詳細的研究，以填補前人研究中的一些空白，並獲得更深入的了解。 -
A novel model for residual fluid catalytic cracking process ( rfcc ) is proposed. it divides the whole reactor into two part : the riser as ideal pipe flow reactor and the sett - ler as ideal cstr. the model contains six lumps reaction kinetics with serial and parallel network
通過將實際裝置中發生裂化反應的提升管和沉降段反應器分別考慮為理想的活塞流反應器和連續攪拌式反應器，建立了簡化的渣油催化裂化反應6集總組分的串列和并行反應動力學網路模型。 -
The phenomenon of convective heat transfer in a pipe flow exits universally in many industrial areas, therefore, how to enhance heat transfer and how to save energy sources are an important investigation domain
流體流動中的換熱現象普遍存在於工業的各個領域中，因此如何強化換熱、節約能源是一個重要的研究領域。 -
Research on turbulent pipe flow heat - transfer characteristic of urban wastewater as a cool and heat source
城市原生污水冷熱源圓管紊流換熱特性 -
It is more accurate than traditional method at the aspect of calculating head loss, pipe flow and node pressure of hydrant. this mathematic model can also be used in the inside and outside of water supply piping calculation and it is excel hardy cross - piping calculation
該方法在計算水頭損失、管段流量、消火栓節點壓力等方面比傳統方法要更加準確，也可被借鑒到室內或室外的給水管網計算，並優于常見的哈代-克羅斯管網平差方法。 -
The selection of pipe wall thickness, the calculation and design key points of the melt flow, melt pipe flow pressure fall and melt flow speed in the design of melt pipes were introduced in detail
摘要介紹了熔體管道設計中管道壁厚選擇、熔體流量、熔體管道流動壓力降和熔體流速等計算方法和設計要點。 -
On the slender body theory, this thesis simulated numerically the movement of hundreds of fibers in pipe flow, and finally, got the macro character of pipe flow of fiber suspensions
本文採用數值模擬的手段，從lagrange法出發，利用細長體理論研究了大量纖維粒子在管流內的運動，並得出管道懸浮流的一些宏觀特性。 -
When increase the amplitude of the weak psb disturbance, slug structure is formed in pipe flow firstly, this is the first transition
當加大psb弱擾動的幅值后，流動中首先出現塞流結構，即第一次轉捩。 -
The anisotropy invariant map was also introduced briefly. the effect of the distance away from the wall and the reynolds number on the turbulence structure in a pipe flow was also analysed
介紹了湍流不變量圖在圓管湍流研究中的應用，分析了離壁距離和雷諾數對管流湍流結構的影響。 -
While slug structure is leaving from computing domain, the successive disturbance develop in downstream direction, the legs of hair - pin vortex approach the wall continuously and induce vortex structures near the wall. the evolution of this near - wall vortex structures brings the secondary transition to turbulence in the pipe flow
隨著塞流結構流出計算域，后繼擾動向下游繼續發展，表現為發卡渦的渦腳向壁面不斷貼近，進而誘發近壁渦結構，近壁渦結構的進一步演化促使圓管流動出現二次轉捩，發展到了湍流階段。
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