论文标题
在基于模型的涡流地层分析中，并通过生物启发的T形腔中的流量衰减
On a model-based analysis of vortex formations and decay in flows through bio-inspired T-shaped cavities
论文作者
论文摘要
倒置T形腔中的流体转运，流从顶部进入并从两个底部出口出发时，会出现一种有趣的现象，该现象会导致其密度低于流体介质的颗粒在水平形成中被困在交界处。但是，这仅发生在少数雷诺数范围内，并且在层流方面也是如此。意外的现象是通过流动中的涡流管形成来调节的。有趣的是，在解剖途径（例如，在动物上部气道中），这种T形（或更普遍的Y形）腔也相当广泛。可以假设，这种捕获现象也可以在这种几何形状中出现。我们当前的模型将水用水作为经过理想化的T形空间的环境流体介质进行模拟，并测量连接处每个臂中涡旋的长度。在我们的研究中，我们使用了层次制度的400个雷诺数进行了调查，并使用淋巴结最大速度的概念估算了涡流管长度，而流动流在涡流耗散方面将达到涡流流量。随着距交界处较远的一个人，涡度和螺旋度轮廓变化也已被报道。
Fluidic transport in inverted T-shaped cavities with the flow entering through the top and exiting from the two bottom outlets experiences an interesting phenomenon that causes particles having density lower than that of the fluid medium to get trapped at the junction, in a horizontal formation. However, this only occurs across a small range of Reynolds numbers and that too in the laminar regime. The unexpected phenomenon is conjectured to be modulated by formation of vortex tubes in the flow. Interestingly enough, such T-shaped (or, more generically, Y-shaped) cavities are also seen quite widely in anatomic pathways, e.g., in animal upper airways. It can be hypothesized that this trapping phenomenon can emerge in such geometries as well. Our current model simulates the occurrence with water as the ambient fluid medium passing through an idealized T-shaped space and measures the length of the vortices in each of the arms of the junction. In our study, we have conducted the investigation using a Reynolds number of 400 that lies in the laminar regime and have estimated the vortex tube lengths using the concept of nodal maximum velocities that the streamwise flow would attain on vortex dissipation. Vorticity and helicity contour variations as one goes further away from the junction have also been reported.
