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Mass Imbalance Error of Waterhammer Equations and Leak Detection
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The waterhammer equations can be used to compute mass inventory changes for pipeline leak detection. In such applications the pipeline is monitored continuously in time and there is no clear ...
Maximum Pressure Head Due to Linear Valve Closure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The maximum pressure head resulting from one-speed closure of wide open valves is investigated. The dimensionless variables formulated in this study make the subtle effect of the initial valve ...
Pipeline Leak Detection by Impulse Response Extraction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A system’s response to an impulse can be used to detect and diagnose abnormalities. The impulse response can be extracted by using cross-correlations between a low amplitude pseudo random binary ...
Closure to “<i>Acoustic Wave Speeds for Slurries in Pipelines</i>” by Chyr Pyng Liou (July, 1984)
Publisher: American Society of Civil Engineers
Acoustic Wave Speeds for Slurries in Pipelines
Publisher: American Society of Civil Engineers
Abstract: The dynamic interaction between solids and fluid for homogeneous slurries during the passage of pressure waves is investigated by assuming the solids to be ellipsoidal in shape. An alternative formula for the acoustic wave ...
Limitations and Proper Use of the Hazen-Williams Equation
Publisher: American Society of Civil Engineers
Abstract: The Hazen-Williams equation is used widely in water supply and sanitary engineering. This equation uses a constant, the Hazen-Williams
Approximation of the Friction Integral in Water Hammer Equations
Publisher: American Society of Civil Engineers
Abstract: A method is proposed to improve the accuracy of the approximation commonly used with the friction term in the water hammer equations. This method partially corrects the truncation error of the friction integral by incorporating ...
Discussion of “<i>Modeling Distribution‐System Water Quality: Dynamic Approach</i>” by Walter M. Grayman, Robert M. Clark, and Richard M. Males (May, 1988, Vol. 114, No. 3)
Publisher: American Society of Civil Engineers
Filling of Pipelines with Undulating Elevation Profiles
Publisher: American Society of Civil Engineers
Abstract: A model is formulated to describe the unsteady motion of a lengthening rigid water column filling an empty pipeline with an undulating elevation profile. The model gives time histories of the water column's length, velocity, ...
Discussions and Closure: Filling of Pipelines with Undulating Elevation Profiles
Publisher: American Society of Civil Engineers
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