Experimental Investigation on Discharge Coefficient of Notched Piano Key Weir [ READ ]
Dr. Saleh Issa Khassaf, Dr. Laith Jawad Aziz, Zainab Ahmed Elkatib
This study presents an experimental investigation to evaluate the effect of notch at sidewall of a Piano Key Weir (PKW) of type B and C on the discharge coefficient under free flow conditions. Model tests were conducted in a 15m long, 0.3m wide and 0.45m deep rectangular glass-walled flume. Eight physical models were prepared for both types: two traditional PKW type-B and C, and six notched models designed in similar dimensions to the traditional one. It was concluded that using staged PKW does not have a major effect on discharge capacity, water depth above the upstream apex (h_1) for type B is greater than type C relative to its upstream piezometric head.
Dr. Saleh Issa Khassaf, Dr. Laith Jawad Aziz, Zainab Ahmed Elkatib
This study presents an experimental investigation to evaluate the effect of notch at sidewall of a Piano Key Weir (PKW) of type B and C on the discharge coefficient under free flow conditions. Model tests were conducted in a 15m long, 0.3m wide and 0.45m deep rectangular glass-walled flume. Eight physical models were prepared for both types: two traditional PKW type-B and C, and six notched models designed in similar dimensions to the traditional one. It was concluded that using staged PKW does not have a major effect on discharge capacity, water depth above the upstream apex (h_1) for type B is greater than type C relative to its upstream piezometric head.
