Mixed Convection around a Heated Rotating Horizontal Square Cylinder in a Circular Enclosure
Mixed Convection around a Heated Rotating Horizontal Square Cylinder in a Circular Enclosure
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DOI：
10.1080/10407789508913729
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发表时间：
1995-07
影响因子：
2
通讯作者：
Lei Yang;B. Farouk
中科院分区：
文献类型：
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作者：
Lei Yang;B. Farouk
给出了同心圆形封闭腔内缓慢旋转的受热水平方形柱体周围二维层流混合对流的数值结果。在半径比χ、格拉晓夫数（Gr）和旋转雷诺数（Re）的取值范围内，分析了旋转和浮力诱导的混合对流的时间演化。所考虑的半径比范围为0.2到0.55。格拉晓夫数的范围从10³到2×10⁴，旋转雷诺数从0到24。在这个参数范围内给出了流场和温度场以及传热特性。详细考虑了内柱体旋转的非圆形几何形状对流场和传热特性的影响，并与先前对不同加热的同心圆环所做的研究进行了比较。
Numerical results are presented for two-dimensional laminar mixed convection flows around a heated horizontal square cylinder rotating slowly within a concentric circular enclosure. The time evolution of the rotation and buoyancy-induced mixed convection flows are analyzed over a range of the radius ratio χ, the Gr, and the rotational Re. The radius ratio considered ranged from 0.2 to 0.55. The Gr range is taken from 103 to 2 × 104, and the rotational Re varied from 0 to 24. The flow and temperature fields and heat transfer characteristics are presented over this parameter range. The effect of the rotating noncircular geometry of the inner cylinder on the flow field and the heat transfer characteristics are considered in detail and compared with those previously studied for differentially heated concentric circular annuli.