I'm currently working on my Bachelor's thesis about the numerical simulation of a turbulent air flow through a rectangular channel. As part of that I'd like to compare my results to empirical correlations for the boundary layer thickness as a function of distance from the inlet for such a flow. However, I can only find correlations for a flat plate (Schlichting, White, Anderson). Does somebody know such correlations? Thanks! This is the essential part of the geometry:
I study the development of the boundary layer from the tip of the plate downstream.