Opposing buoyancy characteristics of Newtonian fluid flow around a confined square cylinder at low and moderate Reynolds numbers

被引：9

作者：

Kumar, Deepak ^{[1
]}

Dhiman, Amit ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem Engn, Roorkee 247667, Uttar Pradesh, India

来源：

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2016年 / 69卷 / 08期

关键词：

CONVECTION HEAT-TRANSFER; 2-DIMENSIONAL LAMINAR-FLOW; MIXED CONVECTION; THERMAL BUOYANCY; CROSS-FLOW; CHANNEL-CONFINEMENT; NANOFLUIDS; REGIME; RE=100; RATIOS;

D O I：

10.1080/10407782.2015.1090838

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The influence of opposing-buoyancy mixed convection from a square cylinder in a vertical channel has been studied at Reynolds numbers (Re) = 1-100, Richardson numbers (Ri) = 0 to 1, and blockage ratios (beta) = 10-50% for air as a working fluid. The onset of a steady to a time-periodic regime is found for Ri = 0 (at Re = 35, 65, 74, and 62), Ri = -0.5 (at Re = 12, 39, 48, and 54), and Ri = 1 (at Re = 9, 30, 39, and 50) for beta = 10%, 25%, 30%, and 50%, respectively. The initiation of flow separation is also determined. Finally, the correlations of Strouhal number, drag coefficient, and the Colburn heat transfer factor were obtained.

引用

页码：874 / 897

页数：24

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