Next Article in Journal
Saltwater Intrusion and Freshwater Storage in Sand Sediments along the Coastline: Hydrogeological Investigations and Groundwater Modeling of Nauru Island
Next Article in Special Issue
Data-Driven Study of Discolouration Material Mobilisation in Trunk Mains
Previous Article in Journal
How to Improve Water Usage Efficiency? Characterization of Family Farms in A Semi-Arid Area
Previous Article in Special Issue
Energy Dissipation in Circular Drop Manholes under Different Outflow Conditions
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Water 2017, 9(10), 789; https://doi.org/10.3390/w9100789

Transient Wave Scattering and Its Influence on Transient Analysis and Leak Detection in Urban Water Supply Systems: Theoretical Analysis and Numerical Validation

Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China
Received: 8 September 2017 / Revised: 8 October 2017 / Accepted: 11 October 2017 / Published: 13 October 2017
View Full-Text   |   Download PDF [4892 KB, uploaded 13 October 2017]   |  

Abstract

This paper investigates the impacts of non-uniformities of pipe diameter (i.e., an inhomogeneous cross-sectional area along pipelines) on transient wave behavior and propagation in water supply pipelines. The multi-scale wave perturbation method is firstly used to derive analytical solutions for the amplitude evolution of transient pressure wave propagation in pipelines, considering regular and random variations of cross-sectional area, respectively. The analytical analysis is based on the one-dimensional (1D) transient wave equation for pipe flow. Both derived results show that transient waves can be attenuated and scattered significantly along the longitudinal direction of the pipeline due to the regular and random non-uniformities of pipe diameter. The obtained analytical results are then validated by extensive 1D numerical simulations under different incident wave and non-uniform pipe conditions. The comparative results indicate that the derived analytical solutions are applicable and useful to describe the wave scattering effect in complex pipeline systems. Finally, the practical implications and influence of wave scattering effects on transient flow analysis and transient-based leak detection in urban water supply systems are discussed in the paper. View Full-Text
Keywords: water supply pipeline; transient wave; non-uniformities; wave scattering; transient modelling; leak detection water supply pipeline; transient wave; non-uniformities; wave scattering; transient modelling; leak detection
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Duan, H.-F. Transient Wave Scattering and Its Influence on Transient Analysis and Leak Detection in Urban Water Supply Systems: Theoretical Analysis and Numerical Validation. Water 2017, 9, 789.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top