Detection of leakage in polymeric transmission pipelines with using reflected compress wave of transient flow

Document Type : Research Paper


1 M.Sc. Student of Department of Water Structurs, Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Iran.

2 Professor, of Department of Water Structurs,Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Iran


 When a sudden pressure surge is induced in a pipe system, discontinuities like leaks, changes of pipe diameter or material, tee-junctions, local head losses or air pockets, introduce changes in the hydraulic transient event propagation. A leak creates a pressure drop; friction increases pressure damping; a dead-end or a closed-valve reflects totally an incident wave; an air bubble creates a pressure drop followed by a pressure increase.
    The detection of these signals allows their identification and location. The information carried in the transient pressure signal can be used to detect, locate and size leaks, and, eventually, to distinguish these from other features existing in the pipeline.
Physical model
    The purpose of this study was to find the location and size of leakage in polyethylene transfer pipes using transient flow. Therefore, a laboratory model was developed for this purpose at the Hydraulic Lab of the Faculty of Engineering Sciences of Shahid Chamran University of Ahvaz.


Main Subjects

1-    Atari, M., Faghfur Maghrebi, M. and Monavarian, A., 2017. Application of pressure measurement method for leakage detection. Civil Engineering and Environmental Engineering Journal of Tabriz, 47 (2), pp. 62-53. (In Persian).
2-    Beck, S.B., Curren, M.D., Sims, N.D. and Stanway, R., 2005. Pipeline network features and leak detection by cross-correlation analysis of reflected waves. Journal of hydraulic engineering131(8), pp.715-723.
3-    Brunone, B. and Ferrante, M., 2001. Detecting leaks in pressurized pipes by means of transients. Journal of hydraulic research39(5), pp.539-547.
4-    Chaudhry, M. H. 1987. Applied Hydraulic Transients (2nd Edition), Litton Educational Publishing Inc. Van Nostrand Reinhold Co.
5-    Colombo, A.F. and Karney, B.W., 2002. Energy and costs of leaky pipes: Toward comprehensive picture. Journal of Water Resources Planning and Management128(6), pp.441-450.
6-    Covas, D., 1998. Leak detection and location in water distribution networks: Hydrodynamic analysis approach. MSc, Instituto Superior Técnico, Technical Univ. of Lisbon, Portugal in Portuguese.
7-    Covas, D., Almeida, A. B. and Ramos, H., 2000a. Leak Location in Pipe Systems Using Pressure Surges. Proceedings of 8th International Conference on Pressure Surges, Eds. Anderson, A., Pub. BHR Group Ltd., The Hague, the Netherlands, pp.169-179.
8-    Covas, D., Ramos, H. and De Almeida, A. B., 2000b. Leak location in pipe systems using pressure surges. Eds. Anderson, A., Pub. BHR Group, The Hague, The Netherlands, pp.169-182.
9-    Covas, D. and Ramos, H., 1999. Leakage detection in single pipelines using pressure wave behaviour. Water Industry System: modelling and optimisation application1, pp.287-299.
10- Haghighi pour, S., 2013. Hydrological review of transient currents in series pipelines using physical and numerical model. PhD thesis of Shahid Chamran University of Ahvaz. (In Persian).
11- Halliwell, A.R., 1963. Velocity of a water-hammer wave in an elastic pipe. Journal of the Hydraulics Division89(4), pp.1-21.
12- Jönsson, L., 1995. Leak Detection in Pipelines Using Hydraulic Transients: Laboratory Measurements. University of Lund. Department of Water Resources Engineering.
13-   Liggett, J.A. and Chen, L.C., 1994. Inverse transient analysis in pipe networks. Journal of Hydraulic Engineering120 (8), pp.934-955..
14- Mohammadi, K., Fathi Moghadam, M., Ahadian, J. and Haghighipour, S., 2015. Physical and numerical simulation of leakage in transient flow. 10th International Conference on Civil Engineering, Tabriz May 15th-17th, 2015. (In Persian).
15- Parker, K.H. and Jones, C.J.H., 1990. Forward and backward running waves in the arteries: analysis using the method of characteristics. Journal of biomechanical engineering112(3), pp.322-326.
16- Taebi, h., 2013. Hydrological investigation of transient currents in parallel pipes using a physical and numerical model. PhD thesis of Shahid Chamran University of Ahvaz. (In Persian).
17-   Wylie, E.B., Streeter, V.L. and Suo, L., 1993. Fluid transients in systems (Vol. 1, p. 464). Englewood Cliffs, NJ: Prentice Hall.
Volume 44, Issue 1
June 2021
Pages 61-75
  • Receive Date: 13 September 2017
  • Revise Date: 09 February 2018
  • Accept Date: 14 February 2018
  • First Publish Date: 21 March 2021