TY  - JOUR
T1  - Effect of Lateral Conduction on the Efficiency of Rectangular Fins
AU - , D. Naylor 
JO  - Journal of Engineering and Applied Sciences
VL  - 2
IS  - 3
SP  - 613
EP  - 618
PY  - 2007
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2007.613.618
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2007.613.618
KW  - Fins
KW  -extended surfaces
KW  -variable heat transfer coefficient
KW  -two-dimensional
KW  -finite element method
KW  -
KW  -laminar boundary layer
AB  - A finite element numerical study has been conducted of two-dimensional heat conduction in a rectangular fin with a variable heat transfer coefficient (h<SUB>x</SUB>) in the flow direction. The results show that the predicted fin efficiency with variable local heat transfer coefficient can be significantly lower than when a uniform h<SUB>x</SUB> value is assumed. The fin efficiency is lower because of the spreading resistance associated with the lateral conduction of heat toward the leading edge. The effect of variable h<SUB>x</SUB> was found to increase as the fin Length-to-Width ratio (L/W) decreased. For laminar boundary layer flow at L/W = 1/10, the fin efficiency with variable h<SUB>x</SUB> was as much as 8.7% lower than with a uniform heat transfer coefficient. For a turbulent flow conditions, the effect of variable h<SUB>x </SUB>was found to be less significant.
ER  -