Experimental investigations and CFD modeling of contaminant intrusion in a water network during transient events

Mohammed Mahmoud, Ashraf Farahat, Mohamed A. Hamouda, Muhammad Al-Zahrani, Muhammad Nadeem Sharif, Rehan Sadiq

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Intrusion in drinking water networks (DWN) can be triggered by transient low-pressure events. This intrusion may result in the contamination of drinking water supplied to consumers, which may have major health impacts. This research aims to investigate the influence of a DWN's operating parameters on the intrusion and progression of the contaminant in a pilot drinking water network setup. Results show that the minimum time required for the contaminant to begin entering the system was influenced by the system operating pressure. Faster initial intrusion times were observed under low operating pressure. In addition, the crack size influenced the time required for the contaminant to fully intrude the system. Similarly, the time required for the contaminant to reach certain points in theDWNwas influenced by the operating pressure. These results were verified using two additional tools; a high-speed camera was used to monitor the contaminant transient progression through the DWN under different pressures; and computational fluid dynamics modeling was used to calculate the corresponding contaminant concentration. The results suggest that the ability of the system to quickly stabilize its operating pressure would reduce the probability of a contaminant intrusion into the DWN.

Original languageEnglish
Article number1425
JournalWater (Switzerland)
Volume11
Issue number7
DOIs
Publication statusPublished - Jul 1 2019

Keywords

  • CFD
  • Contaminant intrusion
  • Drinking water network
  • Transient low pressure

ASJC Scopus subject areas

  • Water Science and Technology
  • Geography, Planning and Development
  • Aquatic Science
  • Biochemistry

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