Theoretical Analysis of Effects of Wall Suction on Entropy Generation Rate in Laminar Condensate Layer on Horizontal Tube
Author
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-12-04
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The effects of wall suction on the entropy generation rate in a two-dimensional steady film condensation flow on a horizontal tube are investigated theoretically.
In analyzing the liquid flow, the effects of both the gravitational force and the viscous force are taken into account.
In addition, a film thickness reduction ratio, S f , is introduced to evaluate the effect of wall suction on the thickness of the condensate layer.
The analytical results show that, the entropy generation rate depends on the Jakob number Ja, the Rayleigh number Ra, the Brinkman number Br, the dimensionless temperature difference ψ , and the wall suction parameter S w .
In addition, it is shown that in the absence of wall suction, a closed-form correlation for the Nusselt number can be derived.
Finally, it is shown that the dimensionless entropy generation due to heat transfer, N T , increases with an increasing suction parameter S w , whereas the dimensionless entropy generation due to liquid film flow friction, N F , decreases.
American Psychological Association (APA)
Chang, Tong-Bou. 2014. Theoretical Analysis of Effects of Wall Suction on Entropy Generation Rate in Laminar Condensate Layer on Horizontal Tube. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1044047
Modern Language Association (MLA)
Chang, Tong-Bou. Theoretical Analysis of Effects of Wall Suction on Entropy Generation Rate in Laminar Condensate Layer on Horizontal Tube. Mathematical Problems in Engineering No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1044047
American Medical Association (AMA)
Chang, Tong-Bou. Theoretical Analysis of Effects of Wall Suction on Entropy Generation Rate in Laminar Condensate Layer on Horizontal Tube. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1044047
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1044047