Comparative Study of Radiative Effects on Double Diffusive Convection in Nongray Air-CO2 Mixtures in Cooperating and Opposing Flow
Joint Authors
Laouar-Meftah, Siham
Lemonnier, Denis
Saury, Didier
Benbrik, Abderrahmane
Cherifi, Mohamed
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-24
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
This study analyses the effects of nongray gas radiation on double diffusive convection, in a square differentially heated cavity filled with air-CO2 mixtures, when the buoyancy forces (thermal and mass) are cooperating or opposing.
The radiative source term in the energy equation is evaluated by the discrete ordinate method (solving the radiative transfer equation) and the SLW spectral model (accounting for real radiative properties of absorbing species).
Here, gas absorption varies with the local temperature and concentration of pollutant, which induces a strong direct coupling between the concentration and thermal fields that would not exist with gray gas.
Simulations are performed at different concentrations of CO2 corresponding to different flow regimes (thermal, transitional, and mass).
Results show the following: (i) in cooperating flow, radiation modifies essentially the heat transfer and the characteristics of temperature and concentration fields; (ii) in opposing flow, radiation effects are more important and depend on the nature of the flow regime.
American Psychological Association (APA)
Laouar-Meftah, Siham& Lemonnier, Denis& Saury, Didier& Benbrik, Abderrahmane& Cherifi, Mohamed. 2015. Comparative Study of Radiative Effects on Double Diffusive Convection in Nongray Air-CO2 Mixtures in Cooperating and Opposing Flow. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-17.
https://search.emarefa.net/detail/BIM-1074211
Modern Language Association (MLA)
Laouar-Meftah, Siham…[et al.]. Comparative Study of Radiative Effects on Double Diffusive Convection in Nongray Air-CO2 Mixtures in Cooperating and Opposing Flow. Mathematical Problems in Engineering No. 2015 (2015), pp.1-17.
https://search.emarefa.net/detail/BIM-1074211
American Medical Association (AMA)
Laouar-Meftah, Siham& Lemonnier, Denis& Saury, Didier& Benbrik, Abderrahmane& Cherifi, Mohamed. Comparative Study of Radiative Effects on Double Diffusive Convection in Nongray Air-CO2 Mixtures in Cooperating and Opposing Flow. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-17.
https://search.emarefa.net/detail/BIM-1074211
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074211