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Magnetohydrodynamic mixed convection in a lid-driven rectangular enclosure partially heated at the bottom and cooled at the top
- Source :
- Thermal Science, Vol 21, Iss 2, Pp 863-874 (2017)
- Publication Year :
- 2017
- Publisher :
- VINCA Institute of Nuclear Sciences, 2017.
-
Abstract
- In the present study, numerical simulation of magnetohydrodynamic (MHD) mixed convection heat transfer and fluid flow has been analyzed in a lid-driven enclosure provided with a constant flux heater. Governing equations were solved via differential quadrature (DQ) method. Moving wall of the enclosure has constant temperature and speed. The calculations were performed for different Richardson number ranging from 0.1 to 10, constant heat flux heater length from 0.2 to 0.8, location of heater center from 0.1 to 0.9, Hartmann number from 0 to 100 and aspect ratio from 0.5 to 2. Two different magnetic field directions were tested as vertical and horizontal. It was found that results of DQ method show good agreement with the results of literature. The magnetic field was more effective when it applied horizontally than that of vertical way. In both direction of magnetic field, it reduced the flow strength and heat transfer. Thus, it can be used as an important control parameter for heat and fluid flow.
- Subjects :
- Physics
Richardson number
Renewable Energy, Sustainability and the Environment
lcsh:Mechanical engineering and machinery
magnetohydrodynamic
Enclosure
Thermodynamics
02 engineering and technology
Mechanics
Heat transfer coefficient
Hartmann number
01 natural sciences
010305 fluids & plasmas
Physics::Fluid Dynamics
020303 mechanical engineering & transports
0203 mechanical engineering
Heat flux
Combined forced and natural convection
0103 physical sciences
Heat transfer
Fluid dynamics
lcsh:TJ1-1570
mixed convection
constant heat flux
differential quadrature method
Subjects
Details
- Language :
- English
- ISSN :
- 23347163 and 03549836
- Volume :
- 21
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Thermal Science
- Accession number :
- edsair.doi.dedup.....30779acc4455b86f606537f42c8d2892