Forced Convection Heat Transfer Analysis through Dimpled Surfaces with Different Arrangements
American Journal of Energy Engineering
Volume 3, Issue 3, May 2015, Pages: 37-45
Received: Apr. 20, 2015;
Accepted: Apr. 25, 2015;
Published: May 11, 2015
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Hasibur Rahman Sardar, Department of Electronics & Communication Engineering, P.A College of Engineering, Karnataka, India
Abdul Razak Kaladgi, Department of Mechanical Engineering, P.A College of Engineering, Karnataka, India
Dimples play a very important role in heat transfer enhancement of electronic cooling systems, heat exchangers etc. This work mainly deals with the experimental investigation of forced convection heat transfer over circular shaped dimples of different diameters on a flat copper plate under external laminar flow conditions. Experimental measurements on heat transfer characteristics of air (with various inlet flow rates) on a flat plate with dimples were conducted. From the obtained results, it was observed that the heat transfer coefficient and Nusselt number were high for the copper plate in which the diameter of dimples increases centrally in the direction of flow (case c) as compared to the other two cases.
Hasibur Rahman Sardar,
Abdul Razak Kaladgi,
Forced Convection Heat Transfer Analysis through Dimpled Surfaces with Different Arrangements, American Journal of Energy Engineering.
Vol. 3, No. 3,
2015, pp. 37-45.
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