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Heat Transfer Augmentation Using Dimples in Forced Convection - An Experimental Approach

Faheem Akthar1, Abdul Razak R Kaladgi2, and Mohammed Samee2
1.Department of Mechanical Engineering, Channabasaveshwara Institute of Technology, Gubbi, Karnataka, India
2.Department of Mechanical Engineering, P.A College of Engineering, Mangalore 574153, Karnataka, India

Abstract—Over the past couple of years the use of concavities or dimples to enhance the heat transfer has been reported by several researchers. This work deals with experimental investigation of the forced convection heat transfer over circular dimpled surfaces. The various heat transfer parameters considered for study are Nusselt number, heat transfer coefficient, heat transferrate andReynolds Number. From the obtained results, novel conclusion for thedesign of compactheat exchangercan be drawn (Katkhaw, 2014).

Index Terms—Forced convection, Dimples, Heat transfer augmentation, Compactheat exchanger

Cite: Faheem Akthar, Abdul Razak R Kaladgi, and Mohammed Samee, "Heat Transfer Augmentation Using Dimples in Forced Convection - An Experimental Approach," International Journal of Mechanical Engineering and Robotics Research, Vol. 4, No. 1, pp. 150-153, January 2015.

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