Abstract
Flow through a channel whose walls are lined with non-erodible porous material is investigated using Beavers and Joseph slip boundary condition. It is shown that the effect of porous lining is to increase the mass flow rate and to decrease the friction factor.
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Abbreviations
- u :
-
streamwise velocity in Zone 1 (of Fig. 1 and Fig. 2)
- h :
-
height of the channel
- h′ :
-
thickness of the porous lining
- Q :
-
Darcy velocity
- p :
-
pressure
- μ :
-
viscosity
- K :
-
absolute permeability of the material
- α :
-
slip parameter
- ρ :
-
density
- λ :
-
resistance coefficient
- R :
-
Reynolds number
- u B :
-
slip velocity at the nominal surface
- ū :
-
the average velocity in Zone 1
- M 1 :
-
non-dimensional mass flow rate in Zone 1 (Fig. 1)
- M 2 :
-
non-dimensional mass flow rate in Zone 2 (Fig. 1)
- M*:
-
non-dimensional mass flow rate in the channel without any porous lining
- m 1 :
-
non-dimensional mass flow rate in Zone 1 (Fig. 4)
- m 2 :
-
non-dimensional mass flow rate in Zone 2 (Fig. 4)
- m 3 :
-
non-dimensional mass flow rate in Zone 3 (Fig. 4)
- (λR)1 :
-
the λR-product for flow in Zone 1 (Fig. 1)
- (λR)2 :
-
the λR-product for flow in Zone 1 (Fig. 4)
- (λR)* :
-
the λR-product for flow in the channel of height h without porous lining
References
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Taylor, G. I., J. Fluid Mech. 49, (1971) 319.
Richardson, S., J. Fluid Mech. 49 (1971) 327.
Rajasekhara, B. M., Ph.D. Thesis, Bangalore Univ., 1974.
Saffmann, P. G., Studies in Appl. Math. 50 (1971) 93.
Rudraiah, N., B. K. Ramaiah, and B. M. Rajasekhara, Int. J. Engg. Sci. 13 (1974) 1.
Chandrasekhara, B. C., Appl. Sci. Res. 31 (1975) 52.
Veerabhadraiah, R. and N. Rudraiah, Vignana Bharati (Bangalore University) 1 No. 1 (1975) 52.
Yuvan, S. W., Foundations of Fluid Mechanics, Prentice-Hall of India, New Delhi, 1969, p. 268.
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Channabasappa, M.N., Umapathy, K.G. & Nayak, I.V. The effect of the thickness of the porous material on the parallel plate channel flow when the walls are provided with non-erodible porous lining. Appl. Sci. Res. 32, 607–617 (1976). https://doi.org/10.1007/BF00384123
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DOI: https://doi.org/10.1007/BF00384123