Effect of discrete V-fin array on thermal performance of solar air heater system - A CFD study

Arbaz Ahamed, H. K. Sachidananda, M. S. Manjunath

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The influence of discretely placed V-fins on the solar air heater performance for Re = 5000-15000 under same heat flux state is presented. The analysis is carried out using numerical methodology and the simulation is done using ANSYS Fluent software. The design parameters of V-fins such as the V-fin altitude is varied between 1 mm and 4 mm while the non-dimensional V-fin height (h/D) is varied as 0.08, 0.16 and 0.32 which corresponds to the fin height values of 4 mm, 8 mm & 16 mm respectively. Longitudinal pitch of V-fin is fixed as 60 mm throughout the analysis. The results reveal that the presence of V-fins augments heat transfer by introducing flow turbulence in the air stream around the V-fin region. The V-fin altitude of 2 mm exhibits the maximum rise in Nusselt number is about 1.3 times compared to smooth duct at Re = 9000 for a specified V-fin height. The V-fin altitude of 4 mm exhibits a maximum increase in friction factor of 1.6 times that of the smooth duct at Re = 15000 for a given V-fin height. Greater fin heights are found to provide improved heat transfer with a maximum Nusselt number rise of 1.38 times that of smooth duct for Re = 5000 for a specified V-fin altitude. Corresponding peak friction factor for Re = 5000 is estimated to be 1.83 times compared to that of smooth duct.

Original languageEnglish
Title of host publication2nd International Conference on Advanced Research in Mechanical Engineering-2021, ICARME 2021
EditorsVivikanand B. Huddar, Santhosh Nagaraja, Shankar Gunashekaran
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735441736
DOIs
Publication statusPublished - 06-01-2022
Event2nd International Conference on Advanced Research in Mechanical Engineering-2021, ICARME 2021 - Bangalore, India
Duration: 29-04-202130-04-2021

Publication series

NameAIP Conference Proceedings
Volume2421
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2nd International Conference on Advanced Research in Mechanical Engineering-2021, ICARME 2021
Country/TerritoryIndia
CityBangalore
Period29-04-2130-04-21

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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