Flow Past a Reacting Flat Plate

we concentrate on general similarity criteria and behavior that can be deduced from the well-known Blasius solution, for flow past a nonreacting flat plate. For high Reynolds number boundary layer flow past a flat plate with no gravitational force in the streamwise direction, for constant viscosity, the boundary layer equation is given by 

In this case, the governing equations and boundary conditions are identical for velocity and concentration. Thus, we can write 

Let us use this result for an analogy between skin friction and mass transfer coefficient. Skin friction coefficient is defined as 

Note The above analogy is frequently used to denote a correspondence between heat and momentum transfer. The same agreement as the above can be applied to heat transfer for a constant wall temperature with v = a, where we get similar equation as the above by replacing dimensionless heat transfer coefficient in place of mass transfer coefficient. 

In this case, the diffusion boundary layer is embedded in the viscous boundary layer and the velocity it sees is that close to the wall. The Blasius solution for flat plate boundary layer in the series form is 

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Flow Past a Reacting Flat Plate 81 The diffusion layer thickness can be estimated from the Nernst relation... 

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