Detrainment of plumes from vertically distributed sources
Detrainment of plumes from vertically distributed sources
复制标题
从垂直分布的源中去除羽流
DOI：
10.1007/s10652-016-9492-x
复制
发表时间：
2016
影响因子：
2.2
通讯作者：
P. Linden
中科院分区：
文献类型：
--
作者：
R. Bonnebaigt;C. P. Caulfield;P. Linden
我们提出的实验结果表明，对于垂直分布在整个壁面上的浮力源的湍流羽流，沉降定性地改变了在密封空间中形成的环境浮力剖面的形状。单向夹带的理论模型预测的分层在质量上与实验中测量的分层不同。在剥离羽流模型中，密度和垂直速度沿羽流宽度呈线性变化，因此羽流流体在中等高度“剥离”到环境中，与传统的单向夹带模型相比，该模型更准确地捕捉了实验中测量到的环境浮力剖面的形状。
We present experimental results demonstrating that, for the turbulent plume from a buoyancy source that is vertically distributed over the full area of a wall, detrainment qualitatively changes the shape of the ambient buoyancy profile that develops in a sealed space. Theoretical models with one-way-entrainment predict stratifications that are qualitatively different from the stratifications measured in experiments. A peeling plume model, where density and vertical velocity vary linearly across the width of the plume, so that plume fluid “peels” off into the ambient at intermediate heights, more accurately captures the shape of the ambient buoyancy profiles measured in experiments than a conventional one-way-entrainment model does.