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Water is flowing at a velocity of 5m/s and a depth of 0.3m in a channel...

Water is flowing at a velocity of 5m/s and a depth of 0.3m in a channel of rectangular cross-section that has a width of 3m. Find the change in depth, and in absolute water level produced by:

(a) a smooth contraction in channel width of 0.3m

(b) a smooth expansion in channel width of 0.3m.

(c) Also find the greatest allowable contraction in width for the upstream flow to be possible as specified.

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