AIR ENTRAINMENT IN FLOWS ON STEEP SLOPES

Abstract

Entrainment of air in hiol, velocity open channel, flow causes hulking of flow and alters normal frictional resistance and other flow oroprties. Thus design problems of proper free board allowance and calculation of modified channel dimensions arise. An attempt has been made to compile the studies done in the field and hydraulic la!-oratories by various investiga-tors. eased on these studies a suitable design procedure for air entrained flow has been evolved and conclusions have been drawn regarding the various aspects of air entrainment pheno-menon in open channel flow. The presentation will be useful to the design engineers whose interest in the subject is growing fast with more and more high head structures coming up.