Technical Brief

Effect of variable sidewall temperatures on the combined surface radiation - convection in a discretely heated enclosure

[+] Author and Article Information
S Saravanan

Professor, Department of Mathematics, Bharathiar University, Coimbatote 641 046, India

N Raja

Research Scholar, Department of Mathematics, Bharathiar University, Coimbatote 641 046, India

1Corresponding author.

ASME doi:10.1115/1.4039912 History: Received October 23, 2017; Revised March 22, 2018


This paper reports the changes made in the ?ow and heat transfer characteristics of a closed enclosure in the presence of sidewalls with symmetrical linear heating. The ?ow inside the enclosure is primarily driven by a centrally placed discrete heater with thermal radiation included at all surfaces involved. Finite volume method based computational results corresponding to the resulting steady state were obtained. The factors causing augmentation and suppression of heat transfer are discussed for two types of sidewall heating. Moreover it is found that the role of radiation is well stronger than convection in determining the total heat transfer rate when the side wall heating is decreasing with height.

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