Back to Search
Start Over
Numerical investigation of convective heat transfer characteristics of circular and oval tube banks with vortex generators
- Source :
- Journal of Mechanical Science and Technology. 34:457-467
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- The present work represents a 3-D numerical investigation of forced convection heat transfer over circular and oval tube banks with longitudinal vortex generators (LVGs) for flow through a fin-and-tube heat exchanger. The thermo-hydraulic performance parameters are studied numerically using computational fluid dynamics (CFD) tool. It is found that within the range of Reynolds number (500-850) studied, the degree of heat transfer enhancement is greatly influenced by the tube shape. Heat transfer increases by 13 % when the angle of attack is varied from 15° to 25°, with a corresponding pressure drop of 40 % and 62 % for the oval tubes and circular tubes, respectively. The effect of the aspect ratio of the oval tubes is observed to be very significant. Several other performance parameters of the oval and circular tube banks with vortex generators under the same operating conditions are compared with a focus on finding an optimal configuration.
- Subjects :
- Pressure drop
0209 industrial biotechnology
Materials science
Convective heat transfer
Mechanical Engineering
Heat transfer enhancement
Reynolds number
02 engineering and technology
Mechanics
Vortex generator
Forced convection
symbols.namesake
020303 mechanical engineering & transports
020901 industrial engineering & automation
0203 mechanical engineering
Mechanics of Materials
Heat transfer
Heat exchanger
symbols
Subjects
Details
- ISSN :
- 19763824 and 1738494X
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Mechanical Science and Technology
- Accession number :
- edsair.doi...........2a60d463cd425d1c29dbba77718df5b0