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Item CONVECTIVE HEAT TRANSFER BY AXIAL FLOW IN AN ANNULUS WITH POROUS LINING.(Pineridge Press, 1983) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.This paper covers a theoretical model of convective heat transfer by axial flow in an annulus bounded by two long concentric circular cylinders, the outer surface of the inner cylinder being provided with a non-erodible porous lining and the two bounding surfaces being maintained at constant temperatures. The analysis makes use of the velocity slip and the temperature slip boundary conditions at the interface and employs Brinkman model to obtain the velocity field in the porous zone. The influence of various parameters on the velocity and temperature fields is studied.Item 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. © 1976 Martinus Nijhoff Publishers.(Martinus Nijhoff, The Hague/Kluwer Academic Publishers, 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) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.1976Item The effect of non-erodible porous lining on the flow between two concentric rotating cylinders is investigated using Beavers and Joseph slip boundary condition. It is shown that the shearing stress at the walls increases with the porous lining thickness parameter ?. © 1979 Indian Academy of Sciences.(Springer India, Effect of porous lining on the flow between two concentric rotating cylinders) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.1979Item The paper proposes a theoretical model for the study of flow and heat transfer in a parallel plate channel, one of whose walls is lined with non-erodible porous material, both the walls being kept at constant temperatures. The analysis uses Brinkman model in the porous medium and employs the velocity and temperature slips at the interface (the so called nominal surface). The influence of the thickness as well as the permeability of the porous medium on the flow field and Nusselt numbers at the walls is investigated. © 1983 Springer-Verlag.(Springer-Verlag, Convective heat transfer in a parallel plate channel with porous lining) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.1983Item The flow and heat transfer in an annulus between rotating coaxial cylinders, with non-erodible porous lining, is investigated. The flow in the porous lining is obtained by using Brinkman equation. At the boundary between the porous lining and the free flow (the so called nominal surface), the velocity slip and the temperature slip are used. A quasi-numerical technique developed by the authors is employed in obtaining the solution of the energy equation. The effect of the thickness of the porous lining and the permeability on the velocity and the Nusselt numbers at the walls is studied. © 1986 Springer-Verlag.(Springer-Verlag, Heat transfer by rotational flow in an annulus with porous lining) Channabasappa, M.N.; Umapathy, K.G.1986