Impact of nonuniform heated plate on double-diffusive natural convection of micropolar fluid in a square cavity with Soret and Dufour effects
| Autor: | K. Periyadurai, Deog Hee Doh, M. Muthtamilselvan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Natural convection
Chemistry General Chemical Engineering Schmidt number Thermodynamics 02 engineering and technology Rayleigh number 021001 nanoscience & nanotechnology 01 natural sciences Nusselt number Sherwood number 010305 fluids & plasmas Vortex Physics::Fluid Dynamics Mechanics of Materials Mass transfer 0103 physical sciences Heat transfer 0210 nano-technology |
| Zdroj: | Advanced Powder Technology. 29:66-77 |
| ISSN: | 0921-8831 |
| DOI: | 10.1016/j.apt.2017.10.012 |
| Popis: | A numerical work has been carried out to study the effect of heated plate on double diffusive natural convection in a cavity with the presence of Soret and Dufour effects. The vertical left and right sidewalls of the cavity are maintained at constant cold temperatures while the lower and upper walls are considered insulated. The influence of pertinent parameters such as Rayleigh number, Schmidt number, vortex viscosity parameter, Soret and Dufour coefficients and plate non-uniformity parameter on the flow and heat transfer characteristics has been examined. Numerical results show that the heat and mass transfer rate increases with the rise of the Rayleigh number and Schmidt number. It is found that the heat and mass transfer rate are considerably suppressed by the vortex viscosity parameter. In addition, it is observed that the average Nusselt number increases and Sherwood number decreases with increasing Soret and Dufour effects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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