Publications - HydraTek

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HydraTek and its principals and partners are active in advancing analysis practices in the water and wastewater industry. Combining our professional practice with research activities, particularly through our strong connections with the University of Toronto but also with other groups in Canada and internationally, we routinely present and publish our findings in journals and at conferences.

You may browse an extensive collection of our works below and, in many cases, the papers are available for download. The lists are organized in reverse chronological order so as to allow for easy access to our most recent works.

Any groups or individuals wishing to collaborate on potential research, including papers and/or presentations may contact us at info@hydratek.com.

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Publications

2021

  • National Guidelines on Undertaking Comprehensive Analyses of Benefits, Costs and Uncertainties of Storm Drainage and Flood Control Infrastructure in a Changing Climate

    Papa, F., Muir, R., Kleiner, Y.

    WEAO Annual Conference, London, Ontario 07-09 November 2021.

  • Reconciling Design Standards across Jurisdictional Boundaries: Examples from York Region

    Papa, F., Baron, F., Xu, L., Meng, K.

    WEAO Annual Conference, London, Ontario 07-09 November 2021.

  • Field-Testing Now Complete on Mobile District Metering Project to Cut Water Losses

    Papa, F., Jenks, B.

    Environmental Science & Engineering Magazine, October 2021.

  • Field-Testing Now Complete on Mobile District Metering Project to Cut Water Losses

    Papa, F., Jenks, B.

    Environmental Science & Engineering Magazine, October 2021.

  • Hydraulic Verification Testing of Pumps

    Papa, F., Radulj, D., Nault, J.D.

    Influents, Summer 2021, Volume 16, Water Environment Association of Ontario (WEAO)

  • Evidence-Based Water Loss Management: Development and Deployment of a Mobile DMA Testing Unit

    Jenks, B., Papa, F., Karney, B.W.

    Proceedings of the CSCE 2021 Annual Conference, May 2021.

  • Mobile DMA testing supports Ontario’s water loss management.

    Papa, F., Jenks, B.

    IWA The Source Magazine, April 2021

2020

  • Hydraulic Transients and Negative Pressures – Consequences and Risks

    Karney, B.W.

    Hydrolink Magazine, Number 2, 2020, The International Association for Hydro-Environment Engineering and Research (IAHR).

  • Leakage Reduction: Water loss management project helps reduce energy consumption associated with leakage.

    Jenks, B., Papa, F.

    Water Canada, March/April 2020.

  • Mobile District Metered Area Testing Helps Cut Watermain Leak Losses

    Jenks, B., Papa, F.

    Environmental Science & Engineering Magazine, February 2020.

  • Discussion of “Skeletonizing Pipes in Series within Urban Water Distribution Systems Using a Transient-Based Method”

    Jung, BS., Karney, B.W.

    ASCE Journal of Hydraulic Engineering, 146(4):07020003

  • Pressure surge control strategies revised

    Jung, BS, Karney, B.W. (2020)

    AWWA Water Science, DOI: 10.1002/aws2.1169

2019

  • Evidence-Based Water Loss Management: Development and Deployment of a Mobile Testing Unit

    Jenks, B., Papa, F.

    Ontario Pipeline, OWWA, Winter 2019.

  • Water Quality and Fire Protection Trade-Offs in Water Distribution Networks

    Gibson, J., Karney, B., Guo, Y. (2019)

    Journal AWWA, November 2019, Vol. 111, No. 11.

  • City of Vaughan District Metered Area (DMA) Pilot Project

    Nault, J., Hossain, A., Panjwani, D., Papa, F.

    Ontario Water Conference, Ottawa, May 2019.

  • Municipalities Wanted for New Water Loss Testing Project

    Papa, F., Jenks, B.

    Environmental Science & Engineering Magazine, April 2019.

2018

  • Individual-level evolutions manifest population-level scaling in complex supply networks

    Cheng, L., Karney, B.W.

    Phys. Rev. E 98, 062323 – Published 28 December 2018

  • Distortions From a Simplified Approach to Fatigue Analysis in PVC Pipes

    Malekpour, A., Karney, B., McPherson, D.

    Journal AWWA, 2018.

  • Pump Performance & Energy Efficiency Testing & Benchmarking

    Papa, F., Radulj, D., Nault, J.

    1st International WDSA/CCWI Joint Conference, Kingston, Ontario, 23-25 July 2018

  • Generalized Flexible Method for Simulating Transient Pipe Network Hydraulics

    Nault, J.D., Karney, B.W., Jung, B.-S.

    Journal of Hydraulic Engineering, ASCE, 2018, 144(7)

2017

  • Numerical investigation of rapid filling in bypass pipelines

    Wang, L., Wang, F., Karney, B.W., Malekpour, A.

    Journal of Hydraulic Research, ISSN 0022-1686 print/ISSN 1814-2079 online, DOI: 10.1080/00221686.2017.1300193, April 25, 2017

  • Uncertainty Analysis in Storm Sewer Collection Systems using Monte Carlo Simulation and Parallel Computing

    Malekpour, A., Papa, F., Radulj, D.

    Water Environment Association of Ontario (WEAO) Annual Technical Symposium, Ottawa, Canada, April 2017.

  • Three-dimensional transient simulation of a prototype pump-turbine during normal turbine shutdown

    Li, Z., Bi, H., Karney, B.W., Wang, Z., Yao, Z.

    Journal of Hydraulic Research, ISSN 1814-2079, March 1, 2017

  • Water Column Separation and Cavity Collapse for Pipelines Protected with Air Vacuum Valves: Understanding the Essential Wave Processes

    Ramezani, L., Karney, B.W.

    Journal of Hydraulic Engineering, ASCE, ISSN 0733-9429, 143(2), February 28, 2017

2016

  • Transient performance of a dual disc check valve during the opening period

    Lai, Z., Karney, B.W., Yang, S., Wu, D., Zhang, F.

    Annals of Nuclear Energy, http://dx.doi.org/10.1016/j.anucene.2016.10.010, 101, October 15, 2016

  • A practical overview of unsteady pipe flow modeling: from physics to numerical solutions

    Jung, B.S., and Karney, B.W.

    Urban Water Journal, 08 September 2016, ISSN: 1573-062X (Print) 1744-9006 (Online)

  • Reviewing and critiquing published approaches to the sustainability assessment of hydropower

    Tahseen, S., Karney, B.W.

    Renewable and Sustainable Energy Reviews, ISSN 1364-0321, Vol 67, September 9, 2016

  • Intrinsic relationship between energy consumption, pressure, and leakage in water distribution systems

    Ghorbanian, V., Karney, B.W., Guo, Y.

    Urban Water Journal, ISSN 1744-9006, 14(5), September 3, 2016

  • Influence of Potential Future Sea-Level Rise on Tides in the China Sea

    Kuang, C., Liang, H., Mao, X., Karney, B.W., Gu, J., Huang, H., Chen, W., Song, H.

    Journal of Coastal Research, ISSN 1551-5036, 33(4), September 1, 2016

  • Numerical modeling of the effects of roughness on flow and eddy formation in fractures

    Briggs, S., Karney, B.W., Sleep, B.E.

    Journal of Rock Mechanics and Geotechnical Engineering, ISSN 1674-7755, 9(1), August 8, 2016

  • World Small Hydropower Development Report 2016

    UNIDO

    United Nations Industrial Development Organization

  • Encouraging Effective Air Management in Water Pipelines: A Critical Review

    Ramezani, L., Karney, B.W., Malekpour, A.

    Journal of Water Resources Planning and Management, ASCE, 142(12), July 19, 2016

  • Field Data–Based Methodology for Estimating the Expected Pipe Break Rates of Water Distribution Systems

    Ghorbanian, V., Guo, Y., Karney B.W.

    Journal of Water Resources Planning and Management, ASCE, 142(10), June 13, 2016

  • Exploring the Multifaceted Role of Pumped Storage at Niagara

    Tahseen, S., Karney, B.W.

    Journal of Water Resources Planning and Management, ASCE, 142(10), June 13, 2016

  • CFD Approach for Column Separation in Water Pipelines

    Wang, H., Zhou, L., Liu, D., Karney, B.W., Wang, P., Xia, L., Ma, J., Xu, C.

    Journal of Hydraulic Engineering, ASCE, 142(10), May 25, 2016

  • Pressure Standards in Water Distribution Systems: Reflection on Current Practice with Consideration of Some Unresolved Issues

    Ghorbanian, V., Karney, B.W., Guo, Y.

    Journal of Water Resources Planning and Management, ASCE, 142(8), April 18, 2016

2015

  • Pumps: Energy Efficiency & Performance Indicators

    Papa, F., Cavaleiro de Ferreira, R., and Radulj, D.

    Water Practice & Technology, IWA, 10(4), December 2015.

  • Building an Integrated Water–Land Use Database for Defining Benchmarks, Conservation Targets, and User Clusters

    Dziedzic, R., Margerm, K., Evenson, J., and Karney, B. W.

    Journal of Water Resources Planning and Management, ASCE, ISSN 0733-9496/04014065(9).

  • Energy Metrics for Water Distribution System Assessment: Case Study of the Toronto Network

    Dziedzic, R., and Karney, B. W.

    Journal of Water Resources Planning and Management, ASCE, ISSN 0733-9496/04015032(11).

  • Spurious Numerical Oscillations in the Preissmann Slot Method: Origin and Suppression

    Malekpour, A., and Karney, B. W.

    Journal of Hydraulic Engineering, ASCE, ISSN 0733-9429.

  • Integrated Sustainability Strategies for the Great Lakes Region

    Tahseen, S., and Karney, B.

    Engineering Dimensions, Professional Engineers Ontario, Setpember/October 2015.

  • The Challenge of Air Valves: A Selective Critical Literature Review

    Ramezani, L., Karney, B. W., and Malekpour, A.

    Journal of Water Resources Planning and Management, ASCE, 141(10), October 2015.

  • Comparing Unsteady Modeling Approaches of Surges Caused by Sudden Air Pocket Compression

    Hatcher, T. M, Malekpour, A., Vasconcelos, J. G., and Karney, B. W.

    Journal of Water Management Modeling, CHI.

  • Physical Understanding of Sudden Pressurization of Pipe Systems with Entrapped Air: Energy Auditing Approach

    Malekpour, A., Karney, B. W., and Nault, J.

    Journal of Hydraulic Engineering, ASCE, August 2015.

  • Influence of impeller-tongue interaction on the unsteady cavitation behavior in a centrifugal pump

    Meng, L., He, M., Zhou, L., Yang, J., Wang, Z., Karney, B.W.

    International Journal for Computer-Aided Engineering and Software

  • Performance Index for Water Distribution Networks under Multiple Loading Conditions

    Dziedzic, R., Karney, B.W.

    Journal of Water Resources Planning and Management, June 30, 2015

  • Lifecycle Assessment of a Water Distribution System Pump

    Nault, J., and Papa, F.

    Journal of Water Resources Planning and Management, ASCE, Volume 141, Special Issue: Sustainability.

  • Water Infrastructure: Long Term Supply, Demand Management and Planning

    Dziedzic, R., and Karney, B. W.

    Canadian Water Network

  • Pump Energy Efficiency Field Testing and Benchmarking in Canada

    Papa, F., Radulj, D., Karney, B. W., and Robertson, M.

    Journal of Water Supply: Research and Technolog, AQUA, IWA Publishing, 63:7:570(8).

  • Leak Size, Detectability and Test Conditions in Pressurized Pipe Systems

    Ferrante, M., Brunone, B., Meniconi, M., Karney, B. W., and Massari, C.

    Water Resources Management Journal, Springer Publishing and European Water Resources Association (EWRA), 28:13:4583(16).

  • Profile-Induced Column Separation and Rejoining during Rapid Pipeline Filling

    Malekpour, A., and Karney, B. W.

    Journal of Hydraulic Engineering, ASCE, 140:11.

2014

  • Column Separation and Rejoinder during Rapid Pipeline Filling Induced by a Partial Flow Blockage

    Malekpour, A., and Karney, B. W.

    Journal of Hydraulic Research, IAHR,  2014:52:3.

  • Micro Hydroelectric Energy Recovery in Municipal Water Systems: A Case Study for Vancouver

    Su, P., and Karney, B. W.

    Urban Water Journal, 11:8:167.

  • Water Distribution System Rehabilitation under Climate Change Mitigation Scenarios in Canada

    Roshani, E., and Filion, Y. R.

    Journal of Water Resources Planning and Management, ASCE. 140(9).

  • Event-Based Approach to Optimize the Timing of Water Main Rehabilitation with Asset Management Strategies

    Roshani, E., and Filion, Y. R.

    Journal of Water Resources Planning and Management, ASCE. 140(6), 04014004.

  • WDS Leakage Management through Pressure Control and Pipes Rehabilitation using an Optimization Approach

    Roshani, E., and Filion, Y. R.

    16th International Water Distribution System Analysis (WDSA) Conference, Bari, Italy, July 2014.

  • The Effect of Future Water Demand Reduction on WDS Rehabilitation Planning

    Roshani, E., and Filion, Y. R.

    16th International Water Distribution System Analysis (WDSA) Conference, Bari, Italy, July 2014.

  • Discussion of “Pressure Surges Following Sudden Air Pocket Entrapment in Storm-Water Tunnels

    Malekpour, A., and Karney, B. W.

    Journal of Hydraulic Engineering, ASCE, 140:4.

  • Refurbishment is Vital to Efficiency

    Papa, F., and Radulj, D.

    World Pumps Magazine, June 2014.

  • Contaminant Intrusion in Water Distribution Systems

    Mansour-Rezaei, S., Naser, G., Malekpour, A., and Karney, B. W.

    Journal of American Water Works Association (AWWA), 105:6.

2013

  • The Reality of Pump Energy Efficiency and Performance: Canada Sets Example in Characterizing Actual Energy Efficiency of Water Pumps with Province-Wide Testing Program

    Radulj, D., and Papa, F.

    Canadian Municipal Water News & Review, CWWA, Fall 2013.

  • Re-Envisioning Our Water Supply System

    Karney, B. W., and Dziedzic, R.

    Public Sector Digest, Q1: Spring 2013.

  • Guidelines for Transient Analysis in Water Transmission and Distribution Systems

    Pothof, I., and Karney, B. W.

    Chapter 1 in “Water Supply Systems Analysis – Selected Topics”, Edited by Avi Ostfeld, InTech.

  • Sustainability Implications

    Karney, B. W., and Venayagamoorthy, S. K.

    Part I of Handbook of Environmental Fluid Dynamics, Volume One: Overview and Fundamentals. Edited by Harindra J. Fernando, CRC Press.

2012

  • Savings at the Pump – Understanding the Real Energy Efficiency of Water Pumps

    Papa, F., and Radulj, D.

    Water Canada, January/February 2012.

    Visit Water Canada website.

  • Stochastic Analysis of Water Hammer and Applications in Reliability-Based Structural Design for Hydro Turbine Penstocks

    Zhang, Q. K., Karney, B. W., Suo, L., and Colombo, A. F.

    Journal of Hydraulic Engineering, ASCE, 137:11:1509(13).

  • Nonreflective Boundary Design via Remote Sensing and Proportional-Integral-Derivative Control Valve

    Zhang, Q. K., Karney, B. W., and Pejovic, S.

    Journal of Hydraulic Engineering, ASCE, 137:11:1477(13).

2011

  • Rigid-Plug Elastic-Water Model for Transient Pipe Flow with Entrapped Air Pocket

    Liu, D., Zhou, L., Karney, B. W., Zhang, K. Q., and Ou, C.

    Journal of Hydraulic Research, IAHR, iFirst, 2011, 1-5.

  • Rapid Filling Analysis of Pipelines with Undulating Profiles by the Method of Characteristics

    Malekpour, A., and Karney, B. W.

    International Scholarly Research Network (ISRN): Applied Mathematics, Volume 2011, Article ID 930460 (16).

  • Analytical Study on Possible Self-Excited Oscillation in S-Shaped Regions of Pump-Turbines

    Zhou, J. X., Karney, B. W., Hu, M., and Xu, J. C.

    Journal of Power and Energy, Institution of Mechanical Engineers (IMechE), Volume 225, Part A.

  • Influence of Entrapped Air Pockets on Hydraulic Transients in Water Pipelines

    Zhou, L., Liu, D., Karney, B. W., and Zhang, Q. F.

    Journal of Hydraulic Engineering, ASCE, 137:12:1686(7).

  • Natural Cities, Unnatural Energy

    Kumar, G., and Karney, B. W

    Chapter 17 in The Natural City: Re-envisioning the Built Environment. Edited by Ingrid L. Stefanovic and Stephen B. Scharper, University of Toronto Press.

  • Impact of Conversion to Compact Fluorescent Lighting and Other Energy Efficient Devices on Greenhouse Gas Emissions

    Ivanco, M., Waher, K., and Karney, B. W.

    Chapter 2 in Air Pollution. Edited by Vanda Villanyi, InTech Open Access.

  • Water Loss = Money Loss

    Papa, F.

    Municipal World, November 2011.

  • Math, Policy and Responsible Action

    Karney, B. W., and Mather, A.

    Engineering Dimensions, September/October 2011.

  • Multi-Objective Design Optimization of Branched Pipeline Systems with Analytical Assessment of Fire Flow Probability

    Jung, B. S., Filion, Y. R., Adams, B. J., and Karney, B. W.

    World Environmental and Water Resources Congress, Palm Springs, California, May 2011.

  • Transient Modeling of a Full Scale Distribution System: Comparison With Field Data

    Ebacher, G., Besner, M. C., Lavoie, J., Jung, B. S., Karney, B. W., and Prévost, M.

    Journal of Water Resources Planning and Management, ASCE. 137:173(10).

  • Hydraulic Transients and Sewage Conveyance – Learning from Experience

    Radulj, D., Papa, F., and Karney, B. W.

    Water Environment Association of Ontario (WEAO) Annual Technical Symposium, Toronto, Canada.  April, 2011.

  • Water-Energy Nexus: A SWOT Analysis

    Karney, B. W.

    Canadian Water Network (CWN), Connecting Water Resources 2011 Conference, Ottawa, Ontario, March 2011.

2010

  • Managing Urban Water Utilization: A Delicate Balance

    Deng, L., and Karney, B. W.

    The Journal of Policy Engagement, Ontario Centre for Engineering and Public Policy, 2:6:10(5).

  • Application of Enhanced Rough Set Approach to the Evaluation of Urban Water Resources Utilization: A Case Study of Beijing

    Deng, L., and Karney, B. W.

    2010 International Conference on Computational Intelligence and Software Engineering (CISE). Wuhan, China.

  • Water Resource Management in Iran’s Ancient Persepolis Complex

    Moradi-Jalal, M., Arianfar, S., Karney, B. W., and Colombo, A. F.

    Chapter 5 in Ancient Water Technologies, Edited by L. W. Mays, Springer Publishing, New York.

  • Air Pollution – Chapter 2

    Ivanco, M., Waher, K., and Karney, B. W. (2011)

    Published by Sciyo and InTech. Edited by Vanda Villanyi, August 2010.

  • Benefits of a System Wide Hydraulic Transient Master Plan

    Eerkes, E., Parente, A. V., Karney, B. W., Glass, J., and Jefferson, H.

    Annual AWWA Distribution Systems Symposium and Exposition (DSS) Conference, National Harbour, Maryland, USA, September 2010.

  • Knowledge Transfer with Intention to Improve Design While Reducing Operational Expenses

    Maricic, T., Karney, B. W., and Pejovic, S.

    IPSI BgD Transactions Advanced Research: Trans-disciplinary Issues in General Science and Engineering, 6:2:7(11), 2010.

  • An Exploratory Approach to Teaching Gradually Varied Flow

    Karney, B. W., Malekpour, A., and Salehi, H.

    Journal of Hydro-Environment Research, 6:1:175(6).

  • Negative Pressures In Full-Scale Distribution System: Field Investigation, Modeling and Estimation of Intrusion Volumes and Risk for Public Health

    Besner, M. C.,Ebacher, G., Jung, B., Karney, B. W., Lavoie, and Prévost, M.

    Drinking Water Engineering and Science, 3:101(6).

  • Air Management and Transient Control to Reduce Water Loss: A Case Study from Mexico City

    Radulj, D., Karney, B. W., and White, C.

    International Water Association (IWA) Water Loss Conference, São Paolo, Brazil, June 2010.

  • A Unified Metric for Water and Energy Loss Studies

    Karney, B. W., and Papa, F.

    International Water Association (IWA) Water Loss Conference, São Paolo, Brazil, June 2010.

  • System-Wide Hydraulic Transient Assessment for the City of Ottawa

    Radulj, D., Papa, F., Karney, B. W., McDonald, S., and Leclair, M.

    Joint Ontario Water Works Association (OWWA) and Ontario Municipal Water Association (OMWA) Conference, Windsor, Ontario, May 2010.

  • System Diagnostics: A Case Study from the City of Vaughan

    Papa, F., Radulj, D., and Frieri, M.

    Joint Ontario Water Works Association (OWWA) and Ontario Municipal Water Association (OMWA) Conference, Windsor, Ontario, May 2010.

  • Forecast of Water Level and Ice Jam Thickness Using the Back Propagation Neural Network and Support Vector Machine Methods

    Wang, J., Sui, J., Guo, L., Karney, B. W., and Jüpner, R.

    International Journal of Environmental Science and Technology, 7:2:215(10).

  • Life-Cycle Perspective on Residential Water Conservation Strategies

    Racoviceanu, A. I., and Karney, B. W.

    Journal of Infrastructure Systems, 16:1:40(10).

  • Current Affairs: Perspectives on Electricity Policy for Ontario

    Reeve, D., Dewees, D. N., and Karney, B. W.

    University of Toronto Press, Toronto, Canada.