Abstract
To investigate the combined influence of Hall effect, ion slip and the temperature boundary condition of the third kind on the magnetohydrodynamic heat transfer in the thermal entrance region of a flat channel, the energy equation is solved by employing the Galerkin-Kantorowich method of variational calculus. The heat generation within the fluid is neglected. It is concluded that there can be a significant influence of Biot number and Hall parameter on the local Nusselt number. Representative results are depicted in tables.
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Abbreviations
- A :
-
channel cross section
- B :
-
magnetic induction
- Bi :
-
Biot number, Eq. (5)
- D :
-
a matrix, Eq. (10)
- E :
-
electric field
- F :
-
a vector, Eq. (7)
- Ha :
-
Hartmann number, Eq. (5)
- Nu :
-
Nusselt number, Eq. (17)
- Pe :
-
Peclet number, Eq. (5)
- R :
-
a vector, Eq. (13)
- Re :
-
Reynolds number, Eq. (5)
- T :
-
temperature
- W :
-
a matrix, Eq. (10)
- a :
-
mass fraction of unionized particles
- c :
-
half channel height, Fig. 1
- c p :
-
specific heat at constant pressure
- f :
-
a function, Eq. (7)
- k :
-
overall heat transfer coefficient, Eq. (4)
- p :
-
pressure
- s :
-
characteristic value, Eq. (7)
- v :
-
velocity
- x, y, z :
-
cartesian coordinate
- β e :
-
Hall parameter
- β 1 :
-
ion slip parameter
- η :
-
dynamic viscosity
- λ :
-
thermal conductivity
- ν :
-
kinematic viscosity
- ρ :
-
mass density
- σ :
-
electrical conductivity
- a:
-
ambient
- i, j :
-
running index
- m:
-
mean value
- w:
-
wall
- x, y, z :
-
cartesian coordinate direction
- 0:
-
prescribed value
- -:
-
dimensionless quantity, Eq. (5)
- ′:
-
reduced quantity, Eq. (5)
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Javeri, V. Combined influence of Hall effect, ion slip and temperature boundary condition of third kind on MHD channel flow heat transfer. Appl. Sci. Res. 33, 11–22 (1977). https://doi.org/10.1007/BF00383190
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DOI: https://doi.org/10.1007/BF00383190