Buoyancy 1 Circular fibre steel flap gate 1 Control structure 1 Fibers 1 Flap gates Floods 1 Hydraulic characteristic 1 Hydraulic control 1 Hydraulic jump 1 Hydraulic machinery 1 Oil well flooding 1 Open channel flow 1 Open channels 1 Opening angle 1 Reconfigurable hardware 1 Reservoirs (water) 1 Soil mechanics 1 Steel fibers 1 Water 1 Water control 1 backwater 1 flooding 1 hydraulic jump 1 opening angle 1