LAMINAR BOUNDARY-LAYER FLOW OF POWER-LAW FLUIDS OVER WAVY SURFACES

The results of a study of forced flow of a power-law fluid over a wavy wall are presented. The boundary layer regime is considered where the generalized Reynolds number is very large and assumed that the waves of the surface have O(1) amplitude and wavelength. The non-similarity boundary layer equation is solved numerically by means of a modern fin ite-difference scheme for several values of the sinusoidal wavy wall a mplitude and power-law index. A discussion is provided for the effect of the sinusoidal waves and power-law index on the velocity field and on the skin friction coefficient.