Transient Simulation and Diagnosis of Partial Blockage in Long-Distance Water Supply Pipeline Systems
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 12, Issue 3
Abstract
A partial blockage usually results in undesirable consequences for long-distance conduits. In order to study the disturbance of partial blockages on transient responses, a numerical model was developed to simulate a partial blockage based on the traditional method of characteristics (MOC). The transient responses were simulated using the proposed numerical model for the water supply conduit with a partial blockage. Based on the equivalent resistance conditions, the distribution of extreme pressures was compared to reveal the disturbance characteristics of the partial blockage. The simulation results show that the disturbance of the extreme pressure is the strongest around the blockage site, and decreases linearly with the distance to the blockage. Subsequently, a diagnosis model was established to detect the zone and the intension of the partial blockage, based on the distribution of the extreme pressures of the transient responses. The results show that the diagnosis model has good performances, irrespective of locations or intensions, with a maximum error of about 2%. The proposed approach can be properly used to detect the zone and the intension of the partial blockage in a single long-distance conduit.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (Nos. 51779216 and 51279175) and the Zhejiang Provincial Natural Science Foundation of China (Grant No. LZ16E090001).
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© 2021 American Society of Civil Engineers.
History
Received: Sep 5, 2019
Accepted: Jan 21, 2021
Published online: Apr 5, 2021
Published in print: Aug 1, 2021
Discussion open until: Sep 5, 2021
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