The turbulent wall plume from a vertically distributed source of buoyancy
The turbulent wall plume from a vertically distributed source of buoyancy
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来自垂直分布的浮力源的湍流壁羽流
DOI：
10.1017/jfm.2015.691
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发表时间：
2015
影响因子：
3.7
通讯作者：
R. C. Kerr
中科院分区：
文献类型：
--
作者：
C. McConnochie;R. C. Kerr
我们对均匀分布的浮力源附近形成的湍流壁羽进行了实验研究。我们的实验结果与Cooper&Hunt(流体力学杂志，第646卷，2010年，第39-58页)的理论模型和实验结果进行了比较。我们的实验给出了顶帽夹带系数为0.048美元\PM 0.006美元。我们测量到的最大垂直羽流速度与库珀和亨特预测的比例一致，但要小得多。我们的测量使我们能够构建一个湍流羽流模型，预测任何高度的所有羽流特性。我们使用这个羽流模型计算了典型的消融冰山和冰锋以及具有加热或冷却垂直表面的典型房间的羽流宽度、速度和雷诺数。
We experimentally investigate the turbulent wall plume that forms next to a uniformly distributed source of buoyancy. Our experimental results are compared with the theoretical model and experiments of Cooper & Hunt (J. Fluid Mech., vol. 646, 2010, pp. 39–58). Our experiments give a top-hat entrainment coefficient of $0.048\pm 0.006$ . We measure a maximum vertical plume velocity that follows the scaling predicted by Cooper & Hunt but is significantly smaller. Our measurements allow us to construct a turbulent plume model that predicts all plume properties at any height. We use this plume model to calculate plume widths, velocities and Reynolds numbers for typical dissolving icebergs and ice fronts and for a typical room with a heated or cooled vertical surface.