Abstract
The steady magneto-hydrodynamic flow of a dusty incompressible electrically conducting and non- Newtonian Oldroyd 8-constant fluid through a circular pipe is examined considering the Hall effect. A constant pressure gradient is imposed in the axial direction of the pipe while an external uniform magnetic field is applied in the perpendicular direction. A numerical solution for the governing nonlinear momentum equations is obtained using the method of finite differences. The effect of the Hall current, the non-Newtonian fluid characteristics and the particle-phase viscosity on the velocity, the volumetric flow rates, and the skin friction coefficients of both the fluid and the particle phases is investigated.
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Abbreviations
- B :
-
Viscosity ratio
- B o :
-
Magnetic induction (kg s−2 A−1)
- Ha :
-
Hartmann number
- J :
-
Current density (A m−2)
- K :
-
Stokes constant (kg s−1)
- p :
-
Pressure gradient (kg m−2 s−2)
- m :
-
Hall parameter
- N :
-
Number of dust particles per unit volume (m−3)
- V :
-
Velocity component of the fluid phase (m s−1)
- V p :
-
Velocity component of the particle phase (m s−1)
- r :
-
Radial direction (m)
- z :
-
Axial direction (m)
- μ :
-
Viscosity of the fluid (kg m−1 s−1)
- μ p :
-
Viscosity of the dust particles (kg m−1 s−1)
- ρ :
-
Density of the fluid
- ρ p :
-
Mass of dust particles per unit volume of the fluid (kg m−3)
- σ :
-
Electrical conductivity of the fluid (m−2 kg−1 s3 A2)
- λ i :
-
Material parameters (i = 1–7)
- α :
-
Inverse Stokes number
- β :
-
Hall factor
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Attia, H.A., Abdeen, M.A.M. Steady MHD Flow of a Dusty Incompressible Non-Newtonian Oldroyd 8-Constant Fluid in a Circular Pipe. Arab J Sci Eng 38, 3153–3160 (2013). https://doi.org/10.1007/s13369-012-0475-z
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DOI: https://doi.org/10.1007/s13369-012-0475-z