9.20 Air enters a square duct through a 1-ft opening as is shownin Fig. P9.20. Because the boundary layer displacement thicknessincreases in the direction of flow, it is necessary to increase thecross-sectional size of the duct if a constant U= 2 ft/s velocity isto be maintained outside the boundary layer. Plot a graph of theduct size, d, as a function of x for 0 sxs 10 ft if U is to remainconstant. Assume laminar flow.2 ft/sdix)2 ft/s1 ftFIGURE P9.20

Answered: Image /qna-images/answer/930b540c-fb42-4571-adb9-cd8d3145c161.jpg

9.20 Air enters a square duct through a 1-f in Fig. P9.20. Because the boundary layer d increases in the direction of flow, it is nec cross-sectional size of the duct if a constant to be maintained outside the boundary laye duct size, d, as a function of x for 0≤x≤ constant. Assume laminar flow. 2 ft/s 1 ft

9.20 Air enters a square duct through a 1-f in Fig. P9.20. Because the boundary layer d increases in the direction of flow, it is nec cross-sectional size of the duct if a constant to be maintained outside the boundary laye duct size, d, as a function of x for 0≤x≤ constant. Assume laminar flow. 2 ft/s 1 ft

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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Concept explainers

Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.

Question

9.20 Air enters a square duct through a 1-ft opening as is shown
in Fig. P9.20. Because the boundary layer displacement thickness
increases in the direction of flow, it is necessary to increase the
cross-sectional size of the duct if a constant U= 2 ft/s velocity is
to be maintained outside the boundary layer. Plot a graph of the
duct size, d, as a function of x for 0 sxs 10 ft if U is to remain
constant. Assume laminar flow.
2 ft/s
dix)
2 ft/s
1 ft
FIGURE P9.20

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