Heat transfer of flow past a cylinder with a slit

• Published in: International journal of thermal sciences Vol. 159; p. 106582
• Main Author: Hsu, Li-Chieh
• Format: Journal Article
• Language: English
• Published: Elsevier Masson SAS 01.01.2021
• Subjects: Angle of slit; Cylinder with a slit; Enhanced heat transfer; Enhanced heat transfer; Angle of slit; Cylinder with a slit
• ISSN: 1290-0729; 1778-4166
• DOI: 10.1016/j.ijthermalsci.2020.106582

This study aimed to determines the heat transfer for flow past a cylinder with a slit. The flows past a cylinder with a slit at different angles of inclination were simulated to determine the effect of the inclination of the slit on the flow pattern and heat transfer. The results show that the slit increases the local Nusselt number and the average Nusselt number for a cylinder. At regimes of higher Reynolds number, there is a significant increase in heat transfer caused by the slit. In terms of increasing the local heat transfer coefficient, the injection mode is more effective than the blowing/suction mode However, the average heat transfer coefficient has a maximum value when the angle of inclination of the slit approaches a critical angle. •Determine the slit effect on heat transfer for a cylinder.•The Nusselt number of cylinder depends on the angle of inclination for slit.•The heat transfer affected by two flow modes: an injection mode and a blowing/suction mode.•There is maximum mean Nusselt number at a specific inclination angle of slit for each Reynolds number.•Heat transfer is increased due to the slit more significantly at higher Reynolds number.