A lined rectangular channel with Manning's n = 0.015 is 5 m wide and has a flow depth of 2m with the bed slope of 1 in 1600. Retaining the rectangular shape of channel section and the same total area of lining, to what maximum extent can the discharge be increased without changing the bed slope? Does the flow change from sub critical to super critical state by this increase in discharge.

A lined rectangular channel with Manning's n = 0.015 is 5 m wide and has a flow depth of 2m with the bed slope of 1 in 1600. Retaining the rectangular shape of channel section and the same total area of lining, to what maximum extent can the discharge be increased without changing the bed slope? Does the flow change from sub critical to super critical state by this increase in discharge.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Time and time related variables in engineering

Time is the event progression starting from past to present and then, future statistically. The time-related variable is any particular value in relation to time to assess its changes on a specified (XY) plane.

Question

A lined rectangular channel with Manning'sn
= 0.015 is 5 m wide and has a flow depth of
2m with the bed slope of 1 in 1600. Retaining
the rectangular shape of channel section and
the same total area of lining, to what maximum
extent can the discharge be increased without
changing the bed slope? Does the flow change
from sub critical to super critical state by this
increase in discharge.

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