Abstract
An automobile engine produces a lot of heat and is subjected to thermal stresses. These high temperatures and thermal stresses generated might cause distortions in the engine components and also reduces the volumetric efficiency of the engine. It is important to remove this heat generated to ensure the ideal functionality of the engine. In order to dissipate this heat out of the engine through convection, extended surfaces(fins) are used as a medium, projected to the engine walls. In the present analysis, arbitrary shaped fins of same surface area are designed and heat transfer analysis is performed. Using the ANSYS Fluent software the analysis is done. The main intent of our study is to increase the heat transfer rate using the arbitrary shaped fins. The results obtained are compared with the regular shaped solid fins. Results show there's a significant increase in heat transfer through the arbitrary shaped fins. The fin with elliptical hole has greater heat transfer rate than other models of fins used in the analysis.
Highlights
In the present analysis the convective heat transfer is taken into account
From the above expression it is clear that the convective heat transfer rate can be increased by increasing ->Temperature difference (Ts-T∞) ->Convection heat transfer coefficient ->Area of exposure To increase h, it is required to install a pump or replace the existing one with a larger one
AkshendraSoniet.al studied the performance of Plate-fin, Pin-fin and Elliptical Fins heat Sinks in Closed Enclosure under Natural Convection thermally
Summary
Heat transfer is a phenomenon of transfer of energy on account of temperature difference. Convection = h*A*(Ts-T∞) Where, h = convective heat transfer coefficient Ts = Temperature of hot surface T∞= Surrounding temperature A = area of contact or exposure. From the above expression it is clear that the convective heat transfer rate can be increased by increasing ->Temperature difference (Ts-T∞) ->Convection heat transfer coefficient ->Area of exposure To increase h, it is required to install a pump or replace the existing one with a larger one. To avoid this we prefer altering the area of exposure.
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