Influence of porous media on intrusion rate into water distribution pipes

Abstract

Research Article| October 08 2013 Influence of porous media on intrusion rate into water distribution pipes Yan Yang; Yan Yang 1College of Civil Engineering and Architecture, Zhejiang University, A810 Anzhong Building, Hangzhou 310058, China Search for other works by this author on: This Site PubMed Google Scholar Tuqiao Zhang; Tuqiao Zhang 2College of Civil Engineering and Architecture, Zhejiang University, A511 Anzhong Building, Hangzhou, 310058, China Search for other works by this author on: This Site PubMed Google Scholar David Z. Zhu David Z. Zhu 3College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China and Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada T6G 2W2 E-mail: david.zhu@ualberta.ca Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2014) 63 (1): 43–50. https://doi.org/10.2166/aqua.2013.213 Article history Received: June 12 2013 Accepted: September 03 2013 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Yan Yang, Tuqiao Zhang, David Z. Zhu; Influence of porous media on intrusion rate into water distribution pipes. Journal of Water Supply: Research and Technology-Aqua 1 February 2014; 63 (1): 43–50. doi: https://doi.org/10.2166/aqua.2013.213 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Untreated water can intrude into water distribution systems through pipe leaks and cracks when negative pressure events occur inside drinking water pipelines. The orifice equation is typically used for calculation of intrusion flow rate, which ignores the impact of the soil surrounding the pipeline. This paper presents the results of an experimental study on the effect of porous media surrounding pipelines and the flow Reynolds number on intrusion flow rate for a circular orifice. The porous media, orifice size, and flow regime affect the discharge coefficient of the orifice equation. A new expression was suggested for predicting the intrusion flow rate. A discontinuity in the discharge coefficient was also found at a large Reynolds number. The effect of the pipe curvature on the discharge coefficient was found to be insignificant. contaminant intrusion, discharge coefficient, orifice equation, porous media, water distribution system This content is only available as a PDF. © IWA Publishing 2014 You do not currently have access to this content.