Statistical And Simulation Analysis On Dimple Configurations Performance Of Heat Dissipation

Kasim, Mohd Shahir and Husshini, Nur Husnina Najeah and Raja Abdullah, Raja Izamshah and Mohd Shahrim, Mohammad Shah All Hafiz and Omar, Ghazali and Ganesan, Hema Nanthini and Mohd Azam, Muhamad Ammar Farhan Maula and Mohd Nawi, Mohd Al Hafiz (2021) Statistical And Simulation Analysis On Dimple Configurations Performance Of Heat Dissipation. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 86 (2). pp. 74-90. ISSN 2289-7879

Text 3663-MANUSCRIPT WITH AUTHORS DETAILS-20197-3-10-20210828.PDF Download (1MB)

Abstract

This paper presents an investigation on cooling effect and flow structure of the spherical dimple configuration during air flow on the Aluminium surface. It is prominently known that applying dimples profile causes an enhancement in heat transfer over a plain surface. A three level of Box-Behnken response surface methodology was performed to find the correlation between the input and output variables. A total of 17 different combinations of these inputs were performed throughout the experiment. The variable inputs to be investigated namely: dimple diameter of 10 - 14 mm, dimple orientation angle of 60°- 90°, and airflow velocity of 16 - 18 m/s to observe the response on the cooling time. The Aluminium block was heated to 60°C and cooled down by air flow at room temperature. The ANOVA was used to identify the significant effect of each parameter. CFD software was used as a simulation tool to analyze the flow structure and Reynolds number that associate with the heat transfer rate to support the statistical findings. Based on the result, all the input parameters are found to be significantly dominated by air flow velocity. Staggered arrangement dimple profile surface improves cooling effect by 63% over the plain flat surface. The increment in Reynolds number will increase the heat transfer which then shortening the cooling time.

Item Type:	Article
Uncontrolled Keywords:	Heat exchanger, Heat transfer enhancement technique, Nusselt number, Passive method
Divisions:	Faculty of Manufacturing Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	15 Mar 2022 17:19
Last Modified:	15 Mar 2022 17:19
URI:	http://eprints.utem.edu.my/id/eprint/25724
Statistic Details:	View Download Statistic

Actions (login required)

View Item