Natural convection in an enclosure with discrete roughness elements on a vertical heated wall
Department
Mechanical Engineering
Document Type
Article
Publication Title
International Journal of Heat and Mass Transfer
ISSN
0017-9310
Volume
31
Issue
7
DOI
10.1016/0017-9310(88)90251-7
First Page
1423
Last Page
1430
Publication Date
1-1-1988
Abstract
Laminar natural convection flow next to a heated wall with single and repeated, two-dimensional, rectangular roughness elements is studied numerically and experimentally. Dye flow visualization in water confirms the numerical prediction that the steady flow over these elements does not separate. Although steady flow reversals near the wall are not predicted or observed, nearly stagnant regions are formed, particularly between closely spaced roughness elements. The surface heat flux in these stagnant regions is relatively low, so the total heat transfer rate may be nearly the same as for a smooth wall in spite of the increased surface area. © 1988.
Recommended Citation
Shakerin, S.,
Bohn, M.,
&
Loehrke, R. I.
(1988).
Natural convection in an enclosure with discrete roughness elements on a vertical heated wall.
International Journal of Heat and Mass Transfer, 31(7), 1423–1430.
DOI: 10.1016/0017-9310(88)90251-7
https://scholarlycommons.pacific.edu/soecs-facarticles/79
