A flow of 8.5 m3 /s occurs in a long rectangular channel 3 m wide with y0 = 1.54 m. There is a smooth constriction in the channel to 1.8 m width.
(a) Determine the depths to be expected in and just upstream of the constriction, neglecting losses. Show the solution on an E-y diagram.
(b) Classify the gradually varied flow profile upstream of the constriction.