When there is not adequate space to construct spillways to discharge floodwater from reservoirs dams, especially when dam sites are narrow and abutments are very steep, use of morning glory spillway is a suitable option because these spillways are placed upslope dams and inside dam reservoirs.
Where Q is the discharge passing through the morning glory spillway, [C.
Crest Control (free-flow), tube or orifice control and full pipe flow, are three possible flow conditions for a morning glory spillway.
1] in their study, constructed physical hydraulic models of morning glory spillways to investigate the effect of using polyhedral spillway crests on the intensity of the discharge passing through the spillway and on the morning glory spillway discharge coefficient, by carrying out various experiments on this type of spillways (Figure 2).
6] in their research, constructed a physical model of the morning glory spillway and conducted laboratory experiments to investigate the effect of the number and thickness of whirlpool-break blades on the discharge coefficient of the morning glory spillway.
The spillway was a 1/140 scale model of the morning glory spillway of WhiskeyTown dam in the United States.
max]) in free flow condition (submergence threshold) in Morning glory spillway was observed under using 12 vortex breakers.
Experimental Study on the Effect of Piers and Boundary Proximity on The Discharge Capacity of a Morning Glory Spillway.
Effect of Whirlpool-break Blades on the Discharge Coefficient of the Morning Glory Spillway.
The Investigation of Discharge Coefficient for the Morning Glory Spillway Using Artificial Neural Network, World Applied Sciences Journal, 17(7): 913-918.