wake boundary 中文意思是什麼
wake boundary
解釋
伴流邊界-
In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data
本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好 -
Although a dual - mode scramjet ' s configuration is simple and mainly consists of inlet, combustor and wake nozzle, its working process is complicated, especially in the combustor, involving a lot of subjects, including hypersonic aerodynamics, combustion chemistry, etc. the inner flow of a combustor is three - dimensional and complicated, including the interaction of shock wave, deflagration, vortex and boundary layer, and so on
它涉及到高超聲速空氣動力學、燃燒化學、擴散傳質等多門學科；其內部的實際流動是復雜的三維流動過程，充滿著激波、膨脹波、燃燒波、各種渦系、附面層及其相互之間的干擾，因此，燃燒室問題是整個發動機研究的關鍵所在。 -
Cross - boundary traffic has increased significantly over the years, in the wake of the growth in economic and social ties between hong kong and the mainland
過境交通隨香港與內地的經濟及社會聯系日益密切，過境交通量近年大幅增加。 -
Cross - boundary traffic has increased by 10 per cent in the past year, in the wake of the growth in economic and social ties between hong kong and the mainland
隨香港與內地的經濟及社會聯系日益密切，過境交通量在過去一年增加了一成。 -
The velocity distributions, the relative mach number distributions and the flow trace distributions are visualized, and the reasons, which cause bad aerodynamic losses and make the flowfield complicated, are analyzed, including wake, secondary flow, separated flow and the interaction between shock and boundary layer
顯示壓氣機內的速度場、相對馬赫數分佈及流動跡線分佈等，並分析造成嚴重損失及使流場趨于復雜紊亂的原因，包括尾跡、二次流、分離流及激波/附面層干擾等現象。 -
By using the method of construct boundary condition at the entrance, it did a research on the formation principle of karman vortex and believed that there was no direct relationship between the formation and the object itself. the existence of the object just provided a basic current in the space to generate a absolutely unstable district and so the explanation of absolutely unstable model near wake flow is more suitable
通過採用構造入口邊界條件的方法，對k rm n渦街的形成機理進行研究，認為渦街的生成與物體本身無直接關系，物體的存在只是在空間內提供了可以產生絕對不穩定區域的基本流，因而近尾跡絕對不穩定模式的解釋較為合適。
分享友人