• Shastri Vishwambhar Naresh

Fins are the extended surfaces which are used to dissipate heat from hot surfaces through natural convection without any external device. Geometry and orientation play a significant role in natural convection heat transfer. Fin arrays on horizontal and vertical surfaces are used in variety of engineering applications to dissipate heat to the Surrounding. For semi-elliptical notch fin array a chimney flow pattern is developed due to density difference. This flow pattern creates a stagnant zone near central bottom region. That portion does not contribute much towards heat dissipation. This area is removed from fins and this modified geometry reduces material cost, material weight without hampering heat transfer rate. The purpose of the present study is to investigate thoroughly the possibility of performance improvement of such arrays by providing a notch at the center and suggest for selection of optimum notch dimensions and spacing by analyzing variety of fin arrangements. The dimensions of fins are changed by maintaining constant spacing between the fins. Study is carried out by comparing results between experimental and CFD analysis. The effect on heat transfer coefficient of fin array with various geometries such as fins without notch, fins with notch, fins with compensation of notch area at sides along length and compensation of notch area at height is examined by experimentally and by CFD. The notches given in semi-elliptical shape. The paper is focusing on effect of semi-elliptical notch on heat transfer rate of horizontal rectangular fin array.

Natural convection, fins, stagnant zone, notch area compensation.

"Review on heat transfer analysis of semi-elliptical notched rectangular fin array with area compensation at sides and height and without area compensation.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 3, page no.i237-i248, March-2023, Available :http://www.jetir.org/papers/JETIR2303837.pdf

"Review on heat transfer analysis of semi-elliptical notched rectangular fin array with area compensation at sides and height and without area compensation.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 3, page no. ppi237-i248, March-2023, Available at : http://www.jetir.org/papers/JETIR2303837.pdf