Numerical Analysis of Heat Transfer in Extended Surface with Radiation and Convection


Sourav Ghosh, Dipankar Pal*


Department of Chemical Engineering, Indian Institute of Petroleum and Energy (IIPE), 2nd Floor, AU Engg College Main Block, Andhra University, Visakhapatnam, Andhra Pradesh, 530003.

Corresponding Author Email: [email protected]

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Extended fin surfaces are very important in heat transfer application. The direction of heat flow is unidirectional and radial variation is neglected. In this article the variational effect of temperature when heat transfer occurs by convection as well as radiation is studied and analyzed. This article shows how radiation effects the efficiency of fins and temperature profile if radiation parameters is neglected. First part will be dealt with physics of heat transfer through fins, and the governing equations by assuming fin cross-sectional area is constant. The equation will be written in dimensionless groups for distinguishing between heat transfer by convection and heat transfer by radiation. For solving the governing equation MATLAB is used. MATLAB gives numerical solution of any kind of linear/non-linear ODE/PDE numerically. In results and discussion variation of dimensionless temperature with fin length is shown along with comparison if heat transfer by radiation neglected. Plot of efficiency vs different dimensionless parameters by fixing others is also obtained in MATLAB.