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Abstract
A composite model for area-average Nusselt number for forced, laminar e ow parallel to a e nite, isothermal rectangular plate for a wide range of Reynolds numbers is proposed. The correlation equation is based on the superposition of the dimensionless shape factor and a modie ed laminar e ow boundary-layer asymptote with an empirically determined interpolation parameter. The Nusselt and Reynolds numbers and the dimensionless shape factor are based on either the rectangle side dimension parallel to the e ow direction or the square root of the heat transferarea.Theproposedcorrelation equationsareapplicableto rectangleswith sidedimensionratiosina range from 1 to 10. Extensive numerical results were used to e nd the optimal values of the interpolation parameter to provide close agreement between the correlation equation predictions and the numerical values. Nomenclature A = plate surface area, ´L £ W, m 2 C;CT = boundary-layer solution coefe cients F.Pr/ = Prandtl number function, Eq. (14) h = convective coefe cient, W/m 2 K
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