Publications

HydraTek and its principals and partners are active in advancing practices in the water, wastewater, hydraulic analysis 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 by subject using the drop down menu 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. Also, wherever appropriate, we’ve provided additional information on some of the papers to assist the reader.

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

How severe can transients be after a sudden depressurization?

Collins, R.P., Boxall, J.B., Karney, B.W., Brunone, B., and Meniconi, S.

Journal AWWA, Volume 104, Number 4, April 2012

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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.

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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).

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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).

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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.

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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)

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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

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Water Loss = Money Loss

Papa, F.

Municipal World, November 2011.

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Math, Policy and Responsible Action

Karney, B.W. & Mather, A.

Engineering Dimensions, September/October 2011.

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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 Resource Planning and Management, ASCE. 137:173(10).

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Hydraulic Transients and Sewage Conveyance – Learning from Experience

Radulj, D., Papa, F., 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.

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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).

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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.

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Air Pollution – Chapter 2

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

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

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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.

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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.

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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).

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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).

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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.

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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.

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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.

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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.

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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).

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Life-Cycle Perspective on Residential Water Conservation Strategies

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

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

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Current Affairs: Perspectives on Electricity Policy for Ontario

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

University of Toronto Press, Toronto, Canada.

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Water Resource Management in Iran’s Ancient Persepolis Complex

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

Ancient Water Technology (Chapter 5) 1st Edition, ed. L.W. Mays; Springer Publishing, New York, New York, USA.

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Demand Management – Improved Technologies or Systems to Reduce Water and Energy Demand Including Smart Meters

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

A Report Prepared for the Canadian Water Network (CWN) and Ontario Centres of Excellence (OCE), August 2009.
Transient Field Monitoring as a Key Driver for Decision Making and Design

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

33rd IAHR Congress: Water Engineering for a Sustainable Environment, Vancouver, British Columbia, Canada, August 2009.

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Experimental Investigation of Transients Caused by Rapid Valve Opening

Brunone, B., Karney, B. W., Ferrante, M., and Meniconi, S.

33rd IAHR Congress: Water Engineering for a Sustainable Environment, Vancouver, British Columbia, Canada, August 2009.

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Systematic Surge Protection for Worst-Case Transient Loadings in Water Distribution Systems

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

Journal of Hydraulic Engineering, ASCE, 135:3:218.

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Leaks and Water Use Representation in Water Distribution System Models: Finding a Working Equivalence

Colombo, A. F., and Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 135:3:234-239.

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A Selective Literature Review of Transient-Based Leak Detection Methods

Colombo, A. F., Lee, P., and Karney, B. W.

Journal of Hydro-Environment Research, 2:4:212(16).

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Slipways Guide Walls Design by Linkage of the 2-D Shallow Water Models and the PSO

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

2nd International Symposium on Shallow Flows, Hong Kong University of Science and Technology, Hong Kong, December 2008.

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Pressure-Relief Valve Selection and Transient Pressure Control

Zhang, K. Q., Karney, B. W., and McPherson D. L.

Journal of AWWA, 100:8:62.

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Assessing the Performance of a Water Transmission System Using an Inverse Transient Method

Karney, B. W., Parente, A., Eerkes, E., and White, C.

Annual ASCE International Pipelines Conference, Atlanta, Georgia, USA, July 2008.

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Flow and High Sediment Yield from the Huangfuchuan Watershed

Sui, J., He, Y., and Karney, B. W.

International Journal of Environmental Science and Technology, 5:2:149-160.

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Assessing the Performance of a Water Transmission System Using an Inverse Transient Method

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

Joint Ontario Water Works Association (OWWA) and Ontario Municipal Water Association (OMWA) Conference, London, Ontario, Canada, April 2008.
Incipient Motion of Non-Cohesive Sediment Under Ice Cover – An Experimental Study

Wang, J., Sui, J., and Karney, B. W.

Journal of Hydrodynamics, 20:1:117-124.

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A Transient 2-D Water Quality Model for Pipleline Systems

Naser, G., and Karney, B. W.

Journal of Hydraulic Research, IAHR, 46:4:516(10).

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Optimal Design and Operation of Irrigation Pumping Stations Using Mathematical Programming and Genetic Algorithm (GA)

Moradi-Jalal, M., and Karney, B. W.

Journal of Hydraulic Research, IAHR, 46:2:237-246.

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Systematic Exploration of Pipeline Network Calibration Using Transients

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

Journal of Hydraulic Research, IAHR, 46:1:129.

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Life-Cycle Inventory of Energy Use and Greenhouse Gas Emissions for Two Hydropower Projects in China

Zhang, Q., Karney, B. W., MacLean, H. L., and Feng, J.

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Effects of River Ice on Stage-Discharge Relationships – A Case Study of the Yellow River

Sui, J., Thring, R., Karney, B. W., and Wang, J.

International Journal of Sediment Research, 22:4:263-272.

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Life-Cycle Energy Use and Greenhouse Gas Emissions Inventory for Water Treatment Systems

Racoviceanu, A. I., Karney, B. W., Kennedy, C. A., and Colombo, A. F.

Journal of Infrastructure Systems, ASCE, 13:4:261-271.

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Smaller Hydro, Higher Risk

Pejovic, S., Karney, B. W., Zhang, Q., and Kumar, G.

2007 IEEE Canada Electrical Power Conference (EPC 2007), Article Number 4520312, pp. 91-96.

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Improvement of the Yazd Water Conveyance Control System by GA Optimization

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

2nd IASTED International Conference on Water Resources Management, Honolulu, Hawaii, USA, August 2007.

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A 2-D Transient Multicomponent Simulation Model: Application to Pipe Wall Corrosion

Naser, G., and Karney, B. W.

Journal of Hydro-Environment Research, 1:1:56(14).

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Field Application of Inverse Transient Analysis to Calibrate London’s Water Distribution System Model

Karney, B. W., Tang, K., Papa, F., Eerkes, E., and Welker, R.

Joint Ontario Water Works Association (OWWA) and Ontario Municipal Water Association (OMWA) Conference, Collingwood, Ontario, May 2007.

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In-Line Check Valves for Water Hammer Control

Karney, B. W., and Simpson, A. R.

Journal of Hydraulic Research, IAHR, 45:4:547.

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The Need for Comprehensive Transient Analysis of Distribution Systems

Jung, B. S., Karney, B. W., Bolous, P. F., and Wood, D. J.

Journal of AWWA, 99:1:112.

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To Switch, or Not to Switch: A Critical Analysis of Canada’s Ban on Incandescent Light Bulbs

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

IEEE Canada Electrical Power Conference, Montreal, Quebec, October 2007.

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Evaluation Of The Flow Control System of Meybod-Ardakan Water Conveyance Pipeline Using a Transient Model (A Case Study)

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

7th International Conference on Hydroinformatics, HIC; Nice, France, September 2006.

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Red Water and Discoloration in a WDS: A Numerical Simulation

Naser, G., Karney, B. W., and Boxall, J. B.

8th Annual International Water Distribution Systems Analysis (WDSA) Symposium, Cincinnati, Ohio, USA, August 2006.

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Accessing the Degree of Unsteadiness in Flow Modeling: from Physics to Numerical Model

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

8th Annual International Water Distribution Systems Analysis (WDSA) Symposium, Cincinnati, Ohio, USA, August 2006.

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An Extended 1-D Transient Corrosion Model Including Multi-Component Chemical Spices

Baral, M. P., Karney, B. W., Naser, G., and Colombo, A. F.

8th Annual International Water Distribution Systems Analysis (WDSA) Symposium, Cincinnati, Ohio, USA, August 2006.

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Hydraulic Optimization of Transient Protection Devices Using GA and PSO Approaches

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

Journal of Water Resource Planning and Management, ASCE. 132:1:44.

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Comprehensive Water Distribution Systems Analysis Handbook for Engineers and Planners

Bolous, P. F.; Lansey, K. E., and Karney, B. W.

Second Edition, MWH Soft Inc., Pasadena, California, USA.

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Numerical Methods for Modeling Transient Flow in Distribution Systems

Wood, D. J., Lingireddy S., Bolous, P. F., Karney, B. W., and McPherson D. L.

Journal of AWWA, 97:7:104.

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Two-Dimensional Simulation Model of Sediment Removal and Flow in a Rectangular Sedimentation Basin

Naser, G., Karney, B. W., and Salehi, A. A. N.

Journal of Environmental Engineering, ASCE, 131:12:1740(10).

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A Systematic Exploration of Uncertainty and Convergence of Inverse Transient Calibration for WDSs

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

7th Annual International Water Distribution Systems Analysis (WDSA) Symposium, Anchorage, Alaska, USA, May 2005.

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Hydraulic Transient Guidelines for Protecting Water Distribution Systems

Bolous, P. F., Karney, B. W., Wood, D. J., and Lingireddy, S.

Journal of AWWA, 97:5:111.

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Life Cycle Energy Analysis of a Water Distribution System

Filion, Y. R., MacLean, H. L., and Karney, B. W.

Journal of Infrastructure Systems, 10:3:120(11).

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Fluid Transients and Pipeline Optimization Using GA and PSO: The Diameter Connection

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

Urban Water Journal, 1:2:167.

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Modelling the Advection Equation Under Water Hammer Conditions

Fernandes, C., and Karney B. W.

Urban Water Journal, 1:2:97.

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Sources of Error in Network Modeling – A Question of Perspective

Filion Y. R., and Karney B. W.

Journal of AWWA, 95:2:119.

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Velocity Profiles and Unsteady Pipe Friction in Transient Flow

Brunone, B., Karney, B. W., Mecarelli, M., and Ferrante, M.

Journal of Water Resource Planning and Management, ASCE. 126:4:236.

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Valve Closure in Graph-Theoretical Models for Slow Transient Network Analysis

Axworthy, D. H., and Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 126:4:304.

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Efficient Inverse Transient Analysis in Series Pipe Systems

Nash, G. A., and Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 125:7:761.

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Energy Estimates for Discretization Errors in Water Hammer Problems

Ghidaoui, M. S., and Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 124:4:384.

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Transient Analysis with Time-Decoupled Pumping Station

Axworthy, D. H., and Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 124:3:301.

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Flexible Discretization Algorithm for Fixed-Grid MOC in Pipelines

Karney, B. W., and Ghidaoui, M. S.

Journal of Hydraulic Engineering, ASCE, 123:11:1004.

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Efficient Valve Representation in Fixed-Grid Characteristics Method

McInnis, D. A., Karney, B. W., and Axworthy, D. H.

Journal of Hydraulic Engineering, ASCE, 123:8:709.

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Applied Hydraulic Transients

Ruus, E., and Karney, B. W.

Ruus Consulting Ltd. Kelowna, British Columbia.
Modeling Low Velocity/High Dispersion Flow in Water Distribution Systems

Axworthy, D. H., and Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 122:3:218.

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Efficient Calculation of Transient Flow in Simple Pipe Networks

Karney, B. W., and McInnis, D.

Journal of Hydraulic Engineering, ASCE, 118:7:1014.

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Energy Relations in Transient Closed-Conduit Flow

Karney, B. W.

Journal of Hydraulic Engineering, ASCE, 116:10:1180

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Transient Analysis of Water Distribution Systems

Karney, B. W., and McInnis, D.

Journal of AWWA, 82:7:62.

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Application of Energy Equations in Unsteady Closed Conduit Flow

McInnis, D. A., and Karney, B. W.

CSCE Annual Conference – First Bi-Annual Environmental Specialty Conference, Hamilton, Ontario, Canada, May 1990.

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Charts for Water Hammer in Low Head Pump Discharge Lines Resulting from Water Column Separation and Check Valve Closure

Ruus, E., Karney, B. W., and El-Fitiany, F. A

Canadian Journal of Civil Engineering, 11:4:717(26).

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Publications

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Publications

How severe can transients be after a sudden depressurization?

Savings at the Pump – Understanding the real energy efficiency of water pumps

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

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

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

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

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

Water Loss = Money Loss

Math, Policy and Responsible Action

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

Hydraulic Transients and Sewage Conveyance – Learning from Experience

Water-Energy Nexus: A SWOT Analysis

Managing Urban Water Utilization: A Delicate Balance

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

Air Pollution – Chapter 2

Benefits of a System Wide Hydraulic Transient Master Plan

Knowledge Transfer with Intention to Improve Design While Reducing Operational Expenses

An Exploratory Approach to Teaching Gradually Varied Flow

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

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

A Unified Metric for Water and Energy Loss Studies

System-Wide Hydraulic Transient Assessment for the City of Ottawa

System Diagnostics: A Case Study from the City of Vaughan

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

Life-Cycle Perspective on Residential Water Conservation Strategies

Current Affairs: Perspectives on Electricity Policy for Ontario

Water Resource Management in Iran’s Ancient Persepolis Complex

Demand Management – Improved Technologies or Systems to Reduce Water and Energy Demand Including Smart Meters

Transient Field Monitoring as a Key Driver for Decision Making and Design

Experimental Investigation of Transients Caused by Rapid Valve Opening

Systematic Surge Protection for Worst-Case Transient Loadings in Water Distribution Systems

Leaks and Water Use Representation in Water Distribution System Models: Finding a Working Equivalence

A Selective Literature Review of Transient-Based Leak Detection Methods

Slipways Guide Walls Design by Linkage of the 2-D Shallow Water Models and the PSO

Pressure-Relief Valve Selection and Transient Pressure Control

Assessing the Performance of a Water Transmission System Using an Inverse Transient Method

Flow and High Sediment Yield from the Huangfuchuan Watershed

Assessing the Performance of a Water Transmission System Using an Inverse Transient Method

Incipient Motion of Non-Cohesive Sediment Under Ice Cover – An Experimental Study

A Transient 2-D Water Quality Model for Pipleline Systems

Optimal Design and Operation of Irrigation Pumping Stations Using Mathematical Programming and Genetic Algorithm (GA)

Systematic Exploration of Pipeline Network Calibration Using Transients

Life-Cycle Inventory of Energy Use and Greenhouse Gas Emissions for Two Hydropower Projects in China

Effects of River Ice on Stage-Discharge Relationships – A Case Study of the Yellow River

Life-Cycle Energy Use and Greenhouse Gas Emissions Inventory for Water Treatment Systems

Smaller Hydro, Higher Risk

Improvement of the Yazd Water Conveyance Control System by GA Optimization

A 2-D Transient Multicomponent Simulation Model: Application to Pipe Wall Corrosion

Field Application of Inverse Transient Analysis to Calibrate London’s Water Distribution System Model

In-Line Check Valves for Water Hammer Control

The Need for Comprehensive Transient Analysis of Distribution Systems

To Switch, or Not to Switch: A Critical Analysis of Canada’s Ban on Incandescent Light Bulbs

Evaluation Of The Flow Control System of Meybod-Ardakan Water Conveyance Pipeline Using a Transient Model (A Case Study)

Red Water and Discoloration in a WDS: A Numerical Simulation

Accessing the Degree of Unsteadiness in Flow Modeling: from Physics to Numerical Model

An Extended 1-D Transient Corrosion Model Including Multi-Component Chemical Spices

Hydraulic Optimization of Transient Protection Devices Using GA and PSO Approaches

Comprehensive Water Distribution Systems Analysis Handbook for Engineers and Planners

Numerical Methods for Modeling Transient Flow in Distribution Systems

Two-Dimensional Simulation Model of Sediment Removal and Flow in a Rectangular Sedimentation Basin

A Systematic Exploration of Uncertainty and Convergence of Inverse Transient Calibration for WDSs

Hydraulic Transient Guidelines for Protecting Water Distribution Systems

Life Cycle Energy Analysis of a Water Distribution System

Fluid Transients and Pipeline Optimization Using GA and PSO: The Diameter Connection

Modelling the Advection Equation Under Water Hammer Conditions

Sources of Error in Network Modeling – A Question of Perspective

Velocity Profiles and Unsteady Pipe Friction in Transient Flow

Valve Closure in Graph-Theoretical Models for Slow Transient Network Analysis

Efficient Inverse Transient Analysis in Series Pipe Systems

Energy Estimates for Discretization Errors in Water Hammer Problems

Transient Analysis with Time-Decoupled Pumping Station

Flexible Discretization Algorithm for Fixed-Grid MOC in Pipelines

Efficient Valve Representation in Fixed-Grid Characteristics Method

Applied Hydraulic Transients

Modeling Low Velocity/High Dispersion Flow in Water Distribution Systems

Efficient Calculation of Transient Flow in Simple Pipe Networks

Energy Relations in Transient Closed-Conduit Flow