Fox And Mcdonald's Introduction To Fluid Mechanics
9th Edition
ISBN: 9781118921876
Author: Pritchard, Philip J.; Leylegian, John C.; Bhaskaran, Rajesh
Publisher: WILEY
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Textbook Question
Chapter 11, Problem 13P
Flow occurs in a rectangular channel of 6 m width and has a specific energy of 3 m. Plot accurately the relation between depth and specific energy. Determine from the curve (a) the critical depth, (b) the maximum flow rate, (c) the flow rate at a depth of 2.4 m, and (d) the depths at which a flow rate of 28.3 m3/s may exist, and (e) the flow condition at these depths.
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Water flows at a steady and uniform depth of 2 m in an open channel of rectangular crosssection having a base width equal to 5 m and laid at a slope of 1 in 1000. It is desired to obtain critical flow in the channel by providing a hump in the bed. Calculate the height of the hump and sketch the flow profile. Consider the value of Manning’s roughness coefficient n =0.02 for the channel surface.
Consider the uniform flow of water in the triangular channel shown in the figure. The
channel bed slope is 0.003 and the roughness coefficient is 0.025. The flow rate in the
channel is 25 m³/s.
What is the normal depth?
a.3.48 m
b.2.28 m
c.4.70 m
d. 1.98 m
What is the critical depth?
a. 1.98 m
b.4.70 m
c.3.48 m
d.2.28 m
If the flow depth at a certain section of the channel is 2 m, the flow is:
a.subcritical
b.critical
c.supercritical
d.can not be determined
VAI
2
1
Gradually varied flow of water in a wide rectangular channel with a per-unitwidth flow rate of 1 m3/s⋅m and a Manning coefficient of n = 0.02 is considered. The slope of the channel is 0.001, and at the location x = 0, the flow depth is measured to be 0.8 m. (a) Determine the normal and critical depths of the flow and classify the water surface profile, and (b) calculate the flow depth y at x = 1000 m by integrating the GVF equation numerically over the range 0 ≤ x ≤ 1000 m. Repeat part (b) to obtain the flow depths for different x values, and plot the surface profile.
Chapter 11 Solutions
Fox And Mcdonald's Introduction To Fluid Mechanics
Ch. 11 - Verify the equation given in Table 11.1 for the...Ch. 11 - A pebble is dropped into a stream of water that...Ch. 11 - Solution of the complete differential equations...Ch. 11 - A water flow rate of 250 cfs flows at a depth of 5...Ch. 11 - Determine and plot the relation between water...Ch. 11 - Capillary waves (ripples) are small amplitude and...Ch. 11 - The Froude number characterizes flow with a free...Ch. 11 - Consider waves on the surface of a tank of water...Ch. 11 - A submerged body traveling horizontally beneath a...Ch. 11 - Water flows in a rectangular channel at a depth of...
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