Figure Q3(c) shows a 6 cm diameter horizontal water pipe expands gradually to a 9 cm diameter pipe. The walls of the expansion section are angled 60° from the horizontal. The average velocity and pressure of water before the expansion section are 7 m/s and 150 kPa, respectively. Determine the head loss in the expansion section and the pressure in the larger diameter pipe. (Given: Loss coefficient for gradual expansion of 0 = 60° included angle is KL=0.07)

Figure Q3(c) shows a 6 cm diameter horizontal water pipe expands gradually to a 9 cm diameter pipe. The walls of the expansion section are angled 60° from the horizontal. The average velocity and pressure of water before the expansion section are 7 m/s and 150 kPa, respectively. Determine the head loss in the expansion section and the pressure in the larger diameter pipe. (Given: Loss coefficient for gradual expansion of 0 = 60° included angle is KL=0.07)

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

Open Channel Flow

Open channel flow is a branch of fluid mechanics. It deals with the flow of fluid in an open conduit or free surface. In an open channel flow, gravity induces the flow of water whose surface is open to the air. This flow is free-falling rather than confined in rigid body conduits. The open channel flow depends upon two parameters that are the cross-section of the conduit and the velocity profile. Practical examples of open channel flow are streams, rivers, canals, and other drainage systems.In open channel flow, the cross-sectional area of at least one of the sides is exposed to air, and the surface of water faces atmospheric pressure. This flow is also known as free gravity flow. The cross-sectional area of the conduit can be either man-made or a natural channel. For instance, the flow in rivers and streams are natural conduits, and the flow in a canal and sanitary systems are man-made or engineered channels.

Question

6 cm
9 cm
Water
7 m/s
150 kPa
FIGURE Q3(c)

Figure Q3(c) shows a 6 cm diameter horizontal water pipe expands gradually to
a 9 cm diameter pipe. The walls of the expansion section are angled 60° from the
horizontal. The average velocity and pressure of water before the expansion
section are 7 m/s and 150 kPa, respectively. Determine the head loss in the
expansion section and the pressure in the larger diameter pipe.
(Given: Loss coefficient for gradual expansion of 0 = 60° included angle is
KL=0.07)

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