Richardson and Reynolds number effects on the near field of buoyant plumes: flow statistics and fluxes

Richardson and Reynolds number effects on the near field of buoyant plumes: flow statistics and fluxes
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理查森和雷诺数对浮力羽流近场的影响:流量统计和通量

DOI:
10.1017/jfm.2023.208
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发表时间:
2023
影响因子:
3.7
通讯作者:
Hamlington, Peter E.
Hamlington, Peter E.
中科院分区:
工程技术2区
文献类型:
--
作者:
Meehan, Michael A.;Hamlington, Peter E.

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高浮力羽流的近场特性,通常被称为懒惰的羽流,在一系列的流动条件下仍然相对知之甚少,特别是与我们的理解远场特性相比。在这里,我们进行充分解决的三维数值模拟的圆形氦羽流的特征的影响,不同的入口理查森,,也检查垂直剖面的无量纲理查森数通量。最后,从目前的模拟的见解被用来定义近,中间和远场区域的浮力羽流。
The near-field characteristics of highly buoyant plumes, commonly referred to as lazy plumes, remain relatively poorly understood across a range of flow conditions, particularly compared with our understanding of far-field characteristics. Here, we perform fully resolved three-dimensional numerical simulations of round helium plumes to characterize the effects of different inlet Richardson, , and also examine vertical profiles of the non-dimensional Richardson number flux. Ultimately, insights from the present simulations are used to define near-, intermediate- and far-field regions in buoyant plumes.
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