Simulation Studies on Two-Dimensional Electronic Board with Multiple Non Identical Heat Sources

Abstract:

The present paper reports results of simulation studies on combined conduction – convection – radiation from two dimensional electronic board equipped with three discrete non identical heat sources. The three non identical heat sources are located across the board. The heat generated in the three heat sources is conducted across the board subsequently getting dissipated by convection and radiation. Air, a radiatively transparent medium, is considered to be the cooling agent. The governing partial differential equations for temperature distribution in the entire computational domain are obtained by appropriate energy balance between the heat generated, convected and radiated. The non linear partial differential equations deduced as above are discretized using finite difference method. The resulting algebraic equations are solved using Gauss - Seidel iterative method. A computer code in C⁺⁺ is written to solve the problem. A thorough energy balance test and grid study has been performed to freeze on appropriate grid size. The effect of thermal conductivity, surface emissivity and convection heat transfer coefficient on local temperature distribution and maximum temperature distribution of the electronic board are demonstrated exhaustively. Keywords: Surface Radiation, Conduction, Convection, Electronic Board, identical Heat sources.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 1776-1783
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.1776
• Online since: July 2014
• Authors: Narasimha Suri Tinnaluri*, Nageswara Reddy Pereddy, Malladi R. Ch. Sastry, Pinjala Tejo Murthi
• Keywords: Conduction, Convection, Electronic Board, Identical Heat Sources, Surface Radiation

References

[1] Gururaja Rao, C., Balaji, C., and Venkatesan, S. P. (2002), Effect of Surface Radiation on Conjugate Mixed Convection in a Vertical Channel with A Discrete Heat Source in Each Wall, International Journal of Heat and Mass Transfer, 45, 3331-3347.

DOI: 10.1016/s0017-9310(02)00061-3

[2] Gururaja Rao, C., (2007), Interaction of Surface Radiation with Conduction and Convection from a Vertical Channel with Multiple Discrete Heat Sources in the Left Wall, Numerical Heat Transfer, part - A Applications, 52, 831-848.

DOI: 10.1080/10407780701348257

[3] Gururaja Rao, C., Nagabhushna Rao V. and Krishna Das, C., (2008), Simulation Studies on Multi Mode Heat Transfer from an Open Cavity with a Flush Mounted Discrete Heat Source, Heat and Mass Transfer, 44, 727-737.

DOI: 10.1007/s00231-007-0301-4

[4] Gururaja Rao, C., Santhosh, D and Vijay Chandra P., (2009), Multi-Mode Heat Transfer Studies on L- Corner with Multiple Discrete Heat Sources, Heat and Mass Transfer, 45, 1293-1302.

DOI: 10.1007/s00231-009-0507-8

[5] Gururaja Rao, C and Naraimha Suri T., (2010), Effect of surface radiation on Conjugate Convection from an electronic board with multiple embedded discrete heat sources, International Journal of Applied Engineering Research, Dindigul, 1, 561 -573.

[6] Jahangeer, S., Ramis, M. K., and Jilani, G. (2007) Conjugate Heat Transfer Analysis of a Heat Generating Vertical Plate, International Journal of Heat and Mass Transfer, 50, 85-93.

DOI: 10.1016/j.ijheatmasstransfer.2006.06.042

[7] Kishinami, K., Saito, H., and Suzuki J. (1995).

[8] Lee, S., and Yovanovich, M. M. (1989) Conjugate Heat Transfer from a Vertical Plate with Discrete Heat Sources Under Natural Convection, ASME Journal of Electronic Packaging, 111, 261-267.

DOI: 10.1115/1.3226545

[9] Narasimha suri, T (2013) Interaction of Surface Radiation with Conjugate Convection from a Rectangular Electronic board with Embedded Heat Sources, International Journal of Mechanica Confab , 2, 1-15.

[10] Sawant, S. M and Gururaja Rao, C., (2009).

[11] Sawant, S. M and Gururaja Rao, C., (2010), Combined Conduction-Mixed Convection-Surface Radiation from a Uniformly Heated Vertical Plate, Chemical Engineering Communications, 197, 1-19.

DOI: 10.1080/00986440903359053

[12] Vynnycky, M., and Kimura, S. (1996) Conjugate Free Convection due to a Heated Vertical Plate, International Journal of Heat and Mass Transfer, 39, 1067-1080.

DOI: 10.1016/0017-9310(95)00188-3

[13] Zinnes, A. E (1970) The Coupling of Conduction with Laminar Natural Convection from A Vertical Flat Plate with Arbitrary Surface Heating, ASME Journal of Heat Transfer, 92, 528-534.

DOI: 10.1115/1.3449708