1. Faculty Publications

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1976 - 197921980 - 19873

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Author: search.filters.author.Nayak, I.V.End date: 1989

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    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
    (1976) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.
    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.
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    Effect of porous lining on the flow between two concentric rotating cylinders
    (1979) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.
    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.
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    Convective heat transfer in a parallel plate channel with porous lining
    (1983) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.
    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.
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    CONVECTIVE HEAT TRANSFER BY AXIAL FLOW IN AN ANNULUS WITH POROUS LINING.
    (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.
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    STUDIES ON SUBSURFACE WATER POTENTIAL AND QUALITY FOR IRRIGATION.
    (1987) Ranganna, G.; Gajendragad, M.R.; Naganna, C.; Gurappa, K.M.; Nayak, I.V.; Chandrakantha, G.; Rao, P.R.M.
    The region of Western Ghats comprising the Sahyadri Mountain chain in southern India has remained underdeveloped notwithstanding its rich natural resources and flora and fauna. The Aladangadi Hole (river) basin is one such area. Although the basin receives very heavy rainfall, it faces water scarcity problems and thus has remained undeveloped. Intense development in the coastal region has created increasing demands for fresh water. As a pilot study, hydrological investigations for the yield, quality of water and soil, aquifer parameters, soil-water-crop compatibility, groundwater potential and Landsat imagery studies have been undertaken. This paper highlights several aspects of irrigation for an all-round development of the basin.