In this paper, infrared radiation exiting plain surfaces with different geometries is numerically simulated. Surfaces under consideration are assumed to have steady uniform heat generation inside. Moreover, the boundaries of the surfaces are considered to be at the surroundings temperature. Infrared radiation is calculated based on the temperature profile determined for the surface. The temperature profile of the surface is determined assuming the two dimensional heat conduction equations to govern the problem. The physical domain is transformed into the appropriate computational domain and the governing equation is mapped into the suitable forms in the new coordinate system of variables. After that the temperature profile of the surface is computed, the infrared radiation distribution of the surface is evaluated based on the equations given in the manuscript. The temperature profile as well as the IR images are given in the results section. It is concluded that the maximum value of infrared radiation of the surface occurs at the center. Moreover, it is concluded that among surfaces with equal areas, the one having the largest perimeter has the least value of IR at its center.
 Skouro liakou A.S., Seferis I., Sianoudis I., Valais I., Fragopoulou A.F. and Margaritis L.H. (2014): Infrared Thermography Imaging: Evaluating surface emissivity and skin thermal response to IR heating. – E-Journal of Science and Technology, vol.3, pp.9-14.
 Mahulikar S.P., Rao G.A., Sonawane H.R. and Prasad H.S.S. (2009): Infrared Signature Studies of Aircraft and Helicopters. – PIERS Proceedings, Moscow, Russia, August 18-21.
 Clark M.R., McCann D.M. and Forde M.C. (2003): Application of infrared thermography to the non-destructive testing of concrete and masonry bridges. – NDT&E International 36, pp.265–275.
 Nasr A. (2012): Infrared Radiation. – Ed. V. Morozhenko (InTech 2012) pp.95–126.
 Hildebrandt C., Raschner C. and Ammer K. (2010): An overview of recent application of medical infrared thermography in sports medicine in Austria. – Sensors, vol.10, pp.4700-4715.
 Kad R.S. (2013): IR thermography is a Condition Monitor Technique in industry. – International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, vol.2, No.3.
 Garnaik S.P. (2000): Thermography-A Condition Monitoring Tool for Process Industries. – Seminar on Condition Monitoring & Safety Engineering for Process Industries, February 14-15.
 Seigel R. and Howell J.R. (1992): Thermal Radiation Heat Transfer. – Third edition. Taylor and Franncis Inc.
 Häuser J. (1996): Modern Introduction to Grid Generation. – EPF Lausanne, 23-27 September.