A trapezoidal channel of bed width 5 m and side slopes 1:2 has a flow of 15 m³/s. At a certain point in the channel the bed slope changes from 10 m/km (upstream) to 50 m/km (downstream). Taking Manning's n to be 0.035, and determine the following: a) The normal depth of flow upstream and downstream; b) The critical depth of flow upstream and downstream; c) The Froude number upstream and downstream; d) The depth at the intersection of the two slopes. Sketch and label the flow profile.
A trapezoidal channel of bed width 5 m and side slopes 1:2 has a flow of 15 m³/s. At a certain point in the channel the bed slope changes from 10 m/km (upstream) to 50 m/km (downstream). Taking Manning's n to be 0.035, and determine the following: a) The normal depth of flow upstream and downstream; b) The critical depth of flow upstream and downstream; c) The Froude number upstream and downstream; d) The depth at the intersection of the two slopes. Sketch and label the flow profile.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Q2.
A trapezoidal channel of bed width 5 m and side slopes 1:2 has a flow of 15 m³/s.
At a certain point in the channel the bed slope changes from 10 m/km (upstream) to
50 m/km (downstream). Taking Manning's n to be 0.035, and determine the
following:
a) The normal depth of flow upstream and downstream;
b) The critical depth of flow upstream and downstream;
c) The Froude number upstream and downstream;
d) The depth at the intersection of the two slopes.
Sketch and label the flow profile.
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