The Effect of Control Cylinder Placed at Different Angles in Front of a Heated Cylinder on Heat Transfer

Abstract

Controlling the flow structure on objects using different control techniques has been a vast field of study for researchers for many years. In this study, the temperature distribution around the heated cylinder was investigated in two different Reynolds numbers (Re = 1400 and Re = 2700) when a 25 mm diameter flow control cylinder is placed in the upstream region of a heated cylinder in a water channel at L/D = 2 position and at an angle of 21°. As a result, it was determined that the 21° angled positioning worsened the heat transfer compared to the fixed (0°) positioning of the control cylinder in the upstream region of the heated cylinder for each Re number examined within the scope of the study. The straight control cylinder in the L/D = 2 position produced better results than the cylinder in the 21° angled position. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.