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ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110
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Free Convection Flow and Heat Transfer Along a Heated Vertical Slotted Surface
RESUMO
In the present paper, the free convection flow of a viscous incompressible fluid past a uniformly heated vertical slotted surface has been investigated numerically. The equations governing the flow and heat transfer are reduced to local nonsimilarity equations, treating ξ = λx/Grx1/4, where Grx is the local Grashof number) as a local slip variable. The transformed boundary layer equations are solved numerically using an implicit finite difference method for values of ξ in the interval [0, ∞). Asymptotic solutions are also obtained for both smaller and larger values of ξ, for the local skin friction, and local rate of heat transfer, and are found to be in excellent agreement with those obtained by the finite difference solutions for all ξ. From the present analysis, it is observed that an increase in ξ leads to increase the skin friction as well as heat transfer at the surface, which then leads to its asymptotic value that corresponds to the problem of natural convection along a nonisothermal vertical surface for a fluid of any Prandtl number.