Experimental and Numerical Analysis of Water Hammer Phenomenon in Pipeline with Fiber Optic Cable
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 12, Issue 1
Abstract
This paper investigates the influence of a fiber optic cable inserted into a straight steel pipeline on pressure oscillations occurring during the rapid water hammer phenomenon. In order to numerically simulate water hammer in the pipeline with an inserted cable, a one-dimensional model with variable pressure wave speeds was used. The required smoothing of the pressure wave was obtained by introducing a diffusion coefficient into the momentum equation. Transient equations were solved using a modified finite-element method. The numerical model was calibrated with the dissipation coefficient based on the results of our own experimental tests. In the experimental study, four different types of cables and three values of initial flow rates have been considered. The obtained values of the calibrated dissipation coefficient are directly proportional to the initial water flow velocity. The results demonstrate that this approach allows one to reproduce the damping of pressure oscillations accurately and to obtain satisfactory results compared to experimental data for a given range of volumetric flow rates.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request, including the measurement data regarding pressure changes in the pipeline with fiber optic cables used during experimental tests.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 12 • Issue 1 • February 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: May 22, 2020
Accepted: Sep 2, 2020
Published online: Nov 10, 2020
Published in print: Feb 1, 2021
Discussion open until: Apr 10, 2021
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