Al-Qadisiyah Journal for Engineering Sciences

Comprehensive Review of Natural Convection Heat Transfer in Annulus Complex Enclosures

Authors

Ammar Abdulkadhim 1
Khaled Al-Farhany 2
Azher M. Abed 3
Hasan Sh. Majdi 4

1 Air conditioning and Refrigeration Techniques Engineering Department, Al-Mustaqbal University College

2 Department of Mechanical Engineering, University of Al-Qadisiyah, Ad-Diwaniyah, 58001, Iraq

3 Air conditioning and Refrigeration Techniques Engineering Department, Al-Mustaqbal University College, Babylon, 51001, Iraq

4 Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon, 51001, Iraq

https://doi.org/10.30772/qjes.v13i2.633
Abstract
The natural convection heat transfer has many applications in engineering like solar collectors, cooling of electronic equipment and geothermal engineering. The present work demonstrates the recent publications in the last ten years in this specific subject for a body located in complex shapes like rhombic, wavy, trapezoidal, elliptical and Parallelogrammic enclosure. Many parameters like Ra, Nu, number of undulations, the position of the inner body had been addressed and discuss to draw the main conclusions and recommendations.  It is worthy to mention that wavy enclosure had been investigated less than the other simple enclosure shapes due to its complexity. Beside that entropy generation should be included in the future studies in complex shapes of enclosure as this will helps the researchers to extended their studies. The inner bodies inside trapezoidal, parallelogrammic enclosure are very limited and more investigation should be done.

Keywords

natural convection
complex enclosure
Triangular
Trapezoidal
Parallelogrammic
Rhombic
Elliptical
Al-Qadisiyah Journal for Engineering Sciences
Volume 13, Issue 2
Spring 2020
Pages 80-90

  • Receive Date 19 June 2023

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