Heat transfer and flow around curved corner cylinder: effect of attack angle

The aim of this study is to investigate the fluid flow structure and heat transfer from an isothermal cylinder with a curved corner radius ratio (r/R) of 0.5, and attack angle (alpha) is varied between 0 degrees <= alpha <= 45 degrees. The cylinder is subjected to airflow at a Reynolds number (Re) = 180 and Prandtl number (Pr) = 0.7. This study focuses on the effect of alpha on the fluid forces, Strouhal number, Nusselt number, and flow structure, and wake bubble size. The sensitivity of the time-mean drag and lift forces is investigated to alpha, and they appear to be minimum at critical alpha of 5 degrees and 12 degrees, respectively. The increase of alpha from 0 to 45 degrees results in about 12.9% enhancement in the heat transfer from the cylinder.

Automated summary

The aim of this study is to investigate the fluid flow and heat transfer characteristics of an isothermal cylinder with a curved corner radius ratio of 0.5, and an attack angle (α) ranging from 0° to 45°. The cylinder is exposed to airflow at a Reynolds number (Re) of 180 and Prandtl number (Pr) of 0.7. The study focuses on the impact of α on fluid forces, Strouhal number, Nusselt number, flow structure, and wake bubble size. The study found that the time-mean drag and lift forces are most sensitive at critical angles of 5° and 12° respectively, and increasing α from 0° to 45° enhances heat transfer from the cylinder by approximately 12.9%.