Several exact solutions considered in literature notably the moving –
boundary flows, stagnation flow, the rotating disk, convergent – wedge flow, and the
flat plate with asymptotic suction – have hinted strongly at boundary – layer behavior.
That is, at large Reynolds numbers the effect of viscosity becomes increasingly
confined to narrow regions near solid walls. The computer models solutions also
shewed this tendency at large Re to sweep the vorticity downstream and leave the
flow far from the walls essentially irrational. Physically, this means that the rate of
downstream convections is much larger than the rate of transverses viscous diffusion.
In this chapter, definitions related to the Boundary layer are described by a formula.
A brief description and derivation in details of Boundary layer.
Theories, integral momentum equation of boundary layer implemented on flat – plate
for laminar and turbulent flow, simulation solution for steady 2D flow, Blasius
solution, Falkner – Skan wedge flow, and Thwaite's method.
Keywords: Boundary layer, Blasius solution, Falkner-Skan wedge flow, Flat plate,
Thwaite`s method.
