Modelling of turbulent bubble flow in the boundary layer

Presented are mechanisms governing the void fraction distribution in upward flow in the boundary layer. Circulation around the bubble is modified to what has been previously assumed in the literature and is composed of two mechanisms, The resulting model predicts the wait peaking as well as the core peaking depending primarily on the bubble diameter. The proposed mechanism is entirely new in the available approaches and has yet to be found in the literature. It is relatively general and enables future modifications.