The hydraulic behavior of the boundary layer growth, which has been investigated in connection with the practical application to the air-entrainment into flows by turbulence, is concerned in the light of mathematical and physical interpretation made possible by the combination of three basic equations of boundary layer, main flow and discharge in hydrodynamics and of experimental verification conducted at the Hydraulics Laboratory, Engineering Research Institute, Kyoto University, with results of the clear difference between the behavior of boundary layer of open channel flows and that along the flat plate in the unconfined flow. Furthermore, the application to design problem of steep chutes and the hydraulic behavior of flows in transition to the fully developed turbulent flow near an entrance of channel are discussed
