Abstract
The unsteady Couette flow of an electrically conducting, viscous, incompressible fluid bounded by two parallel non-conducting porous plates is studied with heat transfer taking the Hall effect into consideration. An external uniform magnetic field and a uniform suction and injection are applied perpendicular to the plates while the fluid motion is subjected to an exponential decaying pressure gradient. The two plates are kept at different but constant temperatures while the Joule and viscous dissipations are included in the energy equation. The effect of the ion slip and the uniform suction and injection on both the velocity and temperature distributions is examined.
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Abbreviations
- a :
-
Viscosity parameter
- b :
-
Thermal conductivity parameter
- c p :
-
Specific heat at constant pressure
- Ec :
-
Eckert number
- Ha :
-
Hartmann number
- i :
-
Unit vector in the axial direction
- j :
-
Unit vector in the vertical direction
- k :
-
Unit vector in thez-direction
- J :
-
Current density
- k :
-
Thermal conductivity
- h :
-
Separation between the two plates
- P :
-
Pressure gradient
- Pr:
-
Prandtl number
- Re:
-
Reynolds number
- S :
-
Suction parameter
- t :
-
Time
- T :
-
Temperature of the fluid
- T 1 :
-
Temperature of the lower plate
- T 2 :
-
Temperature of the upper plate
- m :
-
Hall parameter
- u :
-
Velocity component in thex-direction
- w :
-
Velocity component in thez-direction
- U o :
-
Velocity of the upper plate
- v o :
-
Suction velocity
- x :
-
Axial direction
- y :
-
Distance in the vertical direction
- z :
-
Distance in thez-direction
- μ :
-
Viscosity of the fluid
- θ :
-
Density of the fluid
- ρ :
-
Electrical conductivity of the fluid
- β :
-
Hall factor
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Ali Attia, H. Hall effect on unsteady couette flow with heat transfer under exponential decaying pressure gradient. J Mech Sci Technol 19, 2053–2060 (2005). https://doi.org/10.1007/BF02916498
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DOI: https://doi.org/10.1007/BF02916498