Analysis of turbulent near-wake development behind an infinitely yawed flat plate

An asymptotic analysis of the turbulent near-wake flow behind an infinitely yawed flat plate with sharp trailing edge has been formulated. The feature that the near-wake which is dominated by mixing of oncoming turbulent boundary layers, retains to a large extent the memory of the turbulent structure of the upstream boundary layer has been exploited to develop the analysis. This analysis leads to three regions of wake flow (the inner near-wake, the outer near-wake and the far-wake) for which the governing equations are derived. The matching conditions amongst these regions lead to logarithmic variations for both the components (i.e components perpendicular to and along the trailing edge) of velocity vector in both normal and downstream directions in the overlapping region surrounding the inner near-wake. These features are validated by the available experimental data. Similarity solutions for both the components of the velocity vector (which satisfy the required matching conditions) in the inner near-wake and outer near-wake regions have been obtained by making appropriate eddy-viscosity assumptions. Uniformly valid solutions for both the components of the velocity vector have been constructed for the near-wake. The solutions show good agreement with available experimental data