American Journal of Energy Engineering
Volume 3, Issue 5, September 2015, Pages: 66-70
Received: May 24, 2015;
Accepted: Jun. 29, 2015;
Published: Aug. 10, 2015
Views 5394 Downloads 133
Jamil Ahmed, Department of Computer science and Engineering, P.A College of Engineering, VTU, Mangalore, India
Hasibur Rahman Sardar, Department of Electronics & Communication Engineering, P.A College of Engineering, VTU, Mangalore, India
Abdul Razak Kaladgi, Department of Mechanical Engineering, P.A College of Engineering, VTU, Mangalore, India
Dimples play a very important role in heat transfer enhancement of electronic cooling systems. This work mainly deals with experimental investigation of forced convection heat transfer over square shaped dimples on a flat aluminum plate under external laminar flow conditions. Experimental measurements on heat transfer rate and friction characteristics of air (with various inlet flow rates) on a flat plate were conducted. Both staggered and inline arrangements of the dimples were considered for the analysis. From the obtained results, it has been observed that the heat transfer coefficient were high for the plate having dimples.
Hasibur Rahman Sardar,
Abdul Razak Kaladgi,
Forced Convection Heat Transfer Analysis of Square Shaped Dimples on Flat Plates, American Journal of Energy Engineering.
Vol. 3, No. 5,
2015, pp. 66-70.
Zhang, D., Zheng, L., Xie, G., and Xie, Y., An Experimental Study on Heat Transfer enhancement of Non-Newtonian Fluid in a Rectangular Channel with Dimples/Protrusions, Transactions of the ASME, Vol. 136, pp.021005-10,2014.
Beves, C.C., Barber, T.J., and Leonardi, E., An Investigation of Flow over Two-Dimensional Circular Cavity. In 15th Australasian Fluid Mechanics Conference, the University of Sydney, Australia, pp.13-17, 2004.
Kuethe A. M., Boundary Layer Control of Flow Separation and Heat Exchange. US Patent No. 1191, 1970.
Afanasyev, V.N., Chudnovsky, Y.P., Leontiev, A.I., and Roganov, P.S., Turbulent flow friction and heat transfer characteristics for spherical cavities on a flat plate. Experimental Thermal Fluid Science, Vol. 7, Issue 1, pp. 1–8, 1993.
Chyu, M.K., Yu, Y., Ding, H., Downs, J.P., and Soechting, F.O., Concavity enhanced heat transfer in an internal cooling passage. In Orlando international Gs Turbine & Aero engine Congress & Exhibition, Proceedings of the 1997(ASME paper 97-GT-437), 1997.
Mahmood, G.I., Hill, M.L., Nelson, D.L., Ligrani, P.M., Moon, H.K., and Glezer, B., Local heat transfer and flow structure on and above a dimpled surface in a channel. J Turbo mach, Vol.123, Issue 1, pp: 115–23, 2001.
Mahmood, G. I., and Ligrani, P. M., Heat Transfer in a Dimpled Channel: Combined Influences of Aspect Ratio, Temperature Ratio, Reynolds Number, and Flow Structure. Int. J. Heat Mass Transfer, Vol. 45, pp.2011–2020, 2002.
Xie, G. N., Sunden, B., and Zhang, W. H., Comparisons of Pins/Dimples Protrusions Cooling Concepts for an Internal Blade Tip-Wall at High Reynolds Numbers. ASME J. Heat Transfer, Vol. 133, Issue 6, pp. 0619021-0619029, 2011.
Gadhave, G., and Kumar. P. Enhancement of forced Convection Heat Transfer over Dimple Surface-Review. International Multidisciplinary e - Journal .Vol-1, Issue-2, pp. 51-57, 2012
Katkhaw, N., Vorayos, N., Kiatsiriroat, T., Khunatorn, Y., Bunturat, D., and Nuntaphan. A. Heat transfer behavior of flat plate having 450 ellipsoidal dimpled surfaces. Case Studies in Thermal Engineering, vol.2, pp. 67–74,2014
Patel, I.H., and Borse, S.H.Experimental investigation of heat transfer enhancement over the dimpled surface. International Journal of Engineering Science and Technology, Vol.4, Issue6, pp.3666–3672, 2012.