Steady mixed convective flow and heat transfer from tandem square cylinders in a horizontal channel

作者：Yuan, Renan; Wu, Mengxuan; Huang, Zhu^*

来源：Numerical Heat Transfer Part A-Applications, 2017, 71(10): 1023-1033.

DOI：10.1080/10407782.2017.1330921

The two-dimensional laminar steady mixed convective flow and heat transfer around two identical tandem square cylinders confined in a horizontal channel are simulated by the high-accuracy multidomain pseudo-spectral method. The blockage ratio of the channel is chosen as 0.1, whereas the spacing between the cylinders is fixed with four widths of the cylinder. The Prandtl number is fixed at 0.7, the Reynolds number (Re) is studied in the range 5Re60, and the Richardson number (Ri) demonstrating the influence of thermal buoyancy ranges from 0 to 1. Numerical results reveal that, with the thermal buoyancy effect, the mixed convective flow remains steady. The variations of the overall drag and lift coefficients and the Nusselt numbers, are presented and discussed. Furthermore, the influence of thermal buoyancy on fluid flow and heat transfer is discussed and analyzed.

• 出版日期2017
• 单位盐城工学院; 西南交通大学