Extending the turbulent length scale equation with the use of LES data

The k − kL closure model naturally occurring higher derivative terms, and due to its nature provides a good starting point for studying effects of inflectional instabilities in wakes. In this work, results of scale resolving simulations of a turbulent boundary layer and its corresponding wake at adverse pressure gradients are evaluated with the aim of establishing physics based bounds and assumptions for the expansion of turbulent length scale equations to improve RANS predictive capability for adverse pressure gradients.