Publications
Numerical and experimental analysis of thermal transfer for radial-shaped holed fins
Apr 6, 2025Journal Ain Shams Engineering Journal
Publisher Elsevier B.V. on behalf of Faculty of Engineering, Ain Shams University
DOI https://doi.org/10.1016/j.asej.2025.103529
Issue 9
Volume 16
This study investigates heat characteristics transferred from a rectangular perforated fins, which are widely used in engineering applications for thermal management. The research focuses on the radial shaped perforation geometry effects on the fins thermal performance. Perforation is introduced to reduce the weight of the fins and improve thermal dispersion by increasing the ratio of exposed area to volume and promoting better airflow. A combination of experimental testing and CFD simulations is employed to examine parameters such as Nusselt number, overall thermal efficiency, and effectiveness. The results indicate that strategically placed perforations significantly improve heat transfer performance while reducing material usage by 16% of area. The experimental data closely matched the numerical results with an error of 3.99%. It has been found that the radial fin perforation had achieved a significant overall efficiency and effectiveness enhancement. Present work provides insights into optimizing perforation patterns for various applications, offering an effective solution for lightweight and high-performance heat transfer systems in automotive, aerospace, and electronic cooling industries.
The Experimental Impact of Convective Heat Transfer Improvement from Numerous Perforated Shape Fin Array
Mar 1, 2023Journal Al-Rafidain Engineering Journal
Publisher University of Mosul
DOI https://doi.org/10.1016/j.asej.2023.102320
Issue 1
Volume 28
The current work explores a trial forced convective heat move from rectangular blades on an upward surface at low Reynolds numbers. The heat removal for a proper number of punctured and non-punctured fins, fin dividing, and length was estimated in an upward air stream for fluctuating inlet air speed and some way or another low info heat power somewhere in the range of 20W and 70W. The characteristics are investigated for rectangular, circular, and V-shape perforated fin array against non-perforated one. The impact of different boundaries, like heat input with various liquid stream speed on average coefficient of heat transfer (h) improvement has been considered. The impact of the Nusselt numberand Reynolds number, were practically examined. The heat loss has been improved by increasing the heat transfer coefficient between the fin total surface and its encompassing, through increasing the area of heat to remove all out surface through fin perforations. The trial relations have been differentiated by correlating Nu and Re for non-punctured plate heat sink, the reach 6*103 Re 19*103, and Pr @ 0.7 with error 7%, and punctured finned plate heat sink with the reach 6*103 Re 20*103, and Pr @ 0.7 with a deviation factor R2=0.995.
A study of finding empirical correlation for the Nusselt number and the factors influencing it for perforated fin array of different shapes
Jan 6, 2023Journal Ain Shams Engineering Journal
Publisher Elsevier B.V. on behalf of Faculty of Engineering, Ain Shams University
DOI https://doi.org/10.1016/j.asej.2023.102320
Issue 1
Volume 15
An experimental investigation of three-dimensional steady state forced convection heat transfer through perforated rectangular fins with three different materials were carried out. The experimental procedure has been done in turbulent region with Reynolds number range of (6200 Re 18,700) and (Pr = 0.71) and constant inlet air temperature of (Tin 17C) with a constant power input of (20 W Q 70W)step 10 W. The current study used a rectangular fin array with three materials (stainless steel 430, aluminum 2014-T6, yellow brass), with various perforation shapes and patterns which includes [Rectangular, Circular, and V-shape, all (Inline, staggered)]. It is found that the mean deviation of average Nusselt number taken for previously published results to the experimental result of all specimens have been found to be 8%.Ageneral correlation has been derived based on average Nusselt number with an error of ± 5 % which is described with the formula (Nu¼ bReadRAFPrRAF). It is concluded that the general correlation equation derived has reasonably acceptable degree of accuracy and it’s more general and considers many materials with a wide range of RAF compared with the other equations. The average error found between the general correlation and previously published result is ± 9.8 %.