Velocity Profile Approximation for the Inner Region of the Turbulent Boundary Layer in an Adverse Pressure Grad

摘要

A new near-wall approximate analytical velocity profile is developed for wall-bounded turbulent boundary layers in an adverse pressure gradient. The new velocity profile approximation is used to fit experimental profile data in order to extract near-wall information such as the skin friction coefficient and the viscous layer thickness. Results with Direct Numerical Simulation computer generated data shows the method works well and is superior to the existing model from the literature. Fits to experimental wind tunnel APG data sets indicate that the new analytical velocity profile works well.