Abstract
In this chapter the solution of the thin-shear layer equations for two-dimensional and axisymmetric turbulent boundary layers for both incompressible and compressible flows is discussed. The general behavior of turbulent boundary layers, their composite nature and eddy-viscosity, mixing-length, eddy-conductivity and turbulent Prandtl number concepts are considered. Certain special classes of flows, such as on rough or smooth porous surfaces with zero pressure gradient, are discussed in relation to various empirical laws based on dimensional analysis such as “the law of the wall”, “the defect law” for predicting mean velocity distribution, and similar empirical laws for predicting the mean temperature distribution in such flows.
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