Preliminary remarks Longitudinal, frictionless flow over a flat plate

1 Preliminary remarks Longitudinal, frictionless flow over a flat plate 

In order to discover how heat and mass transfer coefficients change according to the flow we will first consider the longitudinal flow over a flat plate. We assume 

3 Convective heat and mass transfer. Single phase flow 

In the thermal boundary the heat fed into a fluid element by conduction is stored as internal energy and leaves with the fluid element. This is = i (x, y). Outside the thermal boundary layer a constant temperature, a prevails in the outer flow. An observer moving with a fluid element, at a distance y from the wall finds himself, after time t at the position x = wmt. For him the temperature il(x, y) = y) is only a function of time and the distance from the wall y, as 

Together with (3.1) these boundary conditions also describe the temperature field in a semi-infinite body with the initial temperature da, if the surface temperature suddenly assumes the constant value 0 7 i9a. This problem has already been 

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