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Chapter 21

Flow in Pipes

General Characteristics of Pipe Flow I
General Characteristics of Pipe Flow I
Pipe flow describes fluid movement through enclosed, fully-filled conduits, typically cylindrical pipes like water pipes or hydraulic hoses, engineered to ...
General Characteristics of Pipe Flow II
General Characteristics of Pipe Flow II
As fluid enters a pipe, it first flows through an entrance region where the velocity profile adjusts, forming a boundary layer along the walls. This ...
Laminar Flow
Laminar Flow
Laminar flow refers to the smooth, orderly motion of fluid particles in which each particle follows parallel paths with minimal mixing between layers. The ...
Laminar Flow: Problem Solving
Laminar Flow: Problem Solving
Consider air flowing through the pipe at 300 Kelvin at standard atmospheric pressure, with a mass flowrate of 0.0163 kilograms per second. If the flow is ...
Turbulent Flow
Turbulent Flow
Turbulent flow is a fluid movement marked by chaotic shifts in pressure and velocity. Unlike laminar flow, turbulent flow displays complex, irregular ...
Turbulent Flow: Problem Solving
Turbulent Flow: Problem Solving
Consider a liquid that needs to be carbonated. Both the liquid and the carbon dioxide gas are cooled. The temperature is selected as 20 degrees Celsius to ...
Major Losses in Pipes
Major Losses in Pipes
Consider  a fluid flowing through a pipe; it encounters frictional resistance, causing energy losses known as major losses, resulting in a pressure ...
Minor Losses in Pipes
Minor Losses in Pipes
Minor losses in pipe systems arise from components like valves, bends, and fittings that disrupt fluid flow, causing energy dissipation through turbulence ...
Single Pipe Systems
Single Pipe Systems
In pipe flow problems, scenarios are grouped by known information and desired calculation and are typically classified as Type I, II, or III. In a Type I ...
Multiple Pipe Systems
Multiple Pipe Systems
Multiple pipe systems consist of interconnected pipes that regulate fluid flow across complex networks. They can be arranged in series, parallel, loop, or ...
Pipe Flowrate Measurement
Pipe Flowrate Measurement
Flow measurement devices—such as orifice, nozzle, and Venturimeters—operate by narrowing the flow area. This increases fluid velocity and ...
Pipe Flowrate Measurement: Problem Solving
Pipe Flowrate Measurement: Problem Solving
Consider a spray tank system designed to evenly apply pest-control liquid to plants. The system includes a pressurized tank at 150 kPa filled with ...
Design Example: Designing a Residential Plumbing System
Design Example: Designing a Residential Plumbing System
The residential plumbing system is designed by assessing the building's water demand and flow rate needs based on occupancy and fixture requirements. ...
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