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Appropriate position of porous insert in a heat exchanger by thermohydraulic analysis.
- Source :
-
Heat Transfer-Asian Research . Dec2017, Vol. 46 Issue 8, p1363-1379. 17p. - Publication Year :
- 2017
-
Abstract
- This paper presents numerically an appropriate position of a porous insert to get a better thermohydraulic performance from a porous heat exchanger. The simulation is based on the Darcy-Brinkman-Forchheimer model in the porous field. Two-dimensional continuity, momentum, and energy equations with incompressible, laminar, steady assumptions have been solved using a finite volume approach. The analysis is performed for different values of porous layer thickness, length, and porosity at a fixed value of Reynolds number (Re = 100) and thermal conductivity ratio (Rc = 5). The results showed that there is about a 48% and 13% reduction in pressure drop and Nusselt number, respectively, by decreasing horizontal porous substrate thickness from 1 to 1/2 for δv = 1/3 at ε = 0.7. As a result, the pressure drop reduces considerably with a reasonable reduction in heat transfer rate by decreasing horizontal porous substrate thickness from 1 to 1/2. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10992871
- Volume :
- 46
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Heat Transfer-Asian Research
- Publication Type :
- Academic Journal
- Accession number :
- 126016666
- Full Text :
- https://doi.org/10.1002/htj.21279