Abstract
The laminar boundary layer flow of a low Prandtl number fluid with arbitrary thermal properties past a flat plate is studied by the method of matched asymptotic expansions. By assuming power law relations for the viscosity, density and Prandtl number, the first order results for the skin friction, the recovery factor and the heat transfer rate at the wall are obtained. It turns out that the outer flow in the thermal boundary layer is governed by a simple nonlinear differential equation of second order, which is correct to all orders in Prandtl number. Exact and approximate solutions to this outer equation are obtained. Further, it is shown that the first order terms for the recovery factor are independent of the thermal properties, while the heat transfer terms have a complicated dependence. The skin friction result shows the dependence on thermal properties, Mach number and heat transfer rate.
Published Version
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