Experimental Study on Piano Key Weirs of an Ogee Outlet Key for Enhancement in Discharge Capacity

Abstract

AbstractThe Piano Key Weir (PKW) has emerged as an effective solution for enhancing the discharge capacity of spillways, particularly in low-head dams. This study presents an experimental investigation comparing two Type A PKW models that differ solely in ...Practical ApplicationsThis study provides engineers and water managers with practical guidance on how to improve the hydraulic performance of spillways using Piano Key Weirs (PKWs). Laboratory tests showed that replacing the conventional linear outlet ...