Computational Analysis of Heat Transfer by Natural Convection from Triangular Notched Fin Array

SACHIN RAMESH PAWAR; Ravindra B. YARASU

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25-Feb-26

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Computational Analysis of Heat Transfer by Natural Convection from Triangular Notched Fin Array

Author(s):

SACHIN RAMESH PAWAR , GOVT. COLLEGE OF ENGINEERING AMRAVATI; Ravindra B. YARASU, GOVT. COLLEGE OF ENGINEERING AMRAVATI

Keywords:

Fin Array, Natural Convection, Triangular notch, Single Chimney Flow, Notch Fin Array

Abstract:

The purpose of this analysis is to find out the effect of making triangular notch at central base of fin on natural convection heat transfer. In case of horizontal fin arrays (L/H~5) [1], it is observed that the air entering from both the ends gets heated as it moves towards the centre of the fin channel, as well as it rises due to decrease in density. So, a stagnant zone is created at the central bottom portion of fin array channel and hence it does not contribute much in heat dissipation [1]. In this experimental investigation, material from this stagnant portion is removed in the shape of triangular notch from the central bottom portion of fin and added on top side to modify its geometry for analysis. The fin weight remains same. Three types of fin arrays have been analysed that are fin array with 0%, 20% and 40% notch. In this analysis heat input is varied from 50W to 200W in the interval of 50W analysis is done till steady state conditions. In this analysis decrease in heat transfer coefficient is observed for 20% and 40% notch fin than fin without notch.