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|  Dr. E. Benjamin Wylie
Mr. Wylie is Professor Emeritus of Civil and Environmental Engineering at the University of Michigan, Ann Arbor, Michigan.
From 1965 to 1999, he and Professor Victor L. Streeter developed and maintained to a strong research and educational program in fluid transients that has shaped the current engineering practice on transients that has shaped the current engineering practice on transients in pipeline systems. Various editions of their textbooks, on fluid mechanics and fluid transients have been the standard references for engineers and researches in the US and overseas. Dr. Wylie has been an award-winning educator and a much sought-after consultant to industry and government. |  Dr. Jim C. P. Liou
Mr. Liou is a Professor of Civil Engineering at the University of Idaho, Moscow, Idaho, and a guest lecturer at the IHE-Delft, The Netherlands.
He is engaged in research on fluid transients and real-time pipeline leak detection. Prior to his present position, he was with Bechtel Inc, in Ann Arbor, Michigan for three years and then with Stoner Associates, Inc. in Carlisle, Pennsylvania for seven years. He has experience in design, field investigation, and software development related to fluid transients. He stays involved with engineering practice by being a consultant to the water, power, and oil pipeline industries. | Back to Top | | | | | Water hammer may endanger pipeline equipment and may compromise personal safety. What causes water hammer? How can these conditions be anticipated, predicted, and modeled? Is it possible to reduce the severity of these conditions through proper design or control? This course emphasizes the development of an understanding of unsteady liquid pipeline flows with a particular emphasis on wave propagation phenomena. Care is given to concepts that distinguish normal unsteady flow events from more rapid undesirable events. Numerical modeling techniques are developed and demonstrated by solving practical problems encountered in water supply, sewerage and storm water transmission, power, and oil industries. Lectures, real-life examples, demonstrations, and problem solving, including hands-on computer simulations, comprise the format of the course. Topics include: concepts of transient flow, basic equations related to physical behavior, numerical modeling, system schematization, column separation, gaseous cavitation, control concepts including valve operation, air chambers and surge tanks, pumps, system time constants, and resonance. With their extensive experience in research, consulting, software development, and teaching, the instructors offer a practical, understandable course that should enable participants to recognize, analyze, simulate, and solve problems related to unsteady flows in pipeline systems. | Back to Top | | | | | - Understand water hammer phenomena in pipelines
- Develop physical and numerical concepts in simulating transients in practical systems
- Gain insights on transients through discussions with instructors and participants
- Learn to recognize and identify cause(s) of harmful transients
- Develop confidence in solving problems related to pipeline transients
- Use simplified back-of-envelope calculations to assess the likely severity of potential events
| Back to Top | | | | | This course explains the basic concepts of water hammer and provides an overview of engineering practice in this specialty field. The method to track water hammer waves in a time-space plane is explained and illustrated by computer animations. Physical concept, engineering relevance, and approaches to water hammer avoidance and control are stressed. Real-life piping failures due to water hammer are discussed. Mathematical derivations and computer programming are kept at a minimum. Both new comers and seasoned professionals in the design, operation, and maintenance of water systems will find the insights offered by the instructors valuable. Consultants and personnel from government agencies and academia involved with pipeline infrastructure will also benefit from this course. | Back to Top | | | | | - Avoid dangerous and costly blunders in designing pipeline systems
- In the design stage, identify the type of system likely to need transient analysis and potential protection
- Evaluate corrective measures for problems (hardware and operational)
- Explain the influence of specific hardware on water hammer
- Obtain software to analyze and control transients on personal computers
- Evaluate solutions from instructors and participants on individual’s problems
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- Introduction
- Occurrence of transients and engineering relevance
- Definitions
- Physical Principles
- Wave speed and potential surge
- Method of Characteristics
- Method formulation
- Wave propagation
- Numerical solution procedure
- Equipment modeling
- Schematization issues
- Single Pipe Example
- General features of computer codes
- Results interpretation
- Attenuation and line pack
- Viewing transients in time-distance plane
- Examples by animations
- Wave Transmission and Reflection
- Diameter and/or wave speed change
- In-line orifices and valves
- Trapped gas mass and air chambers
- Surge tanks and stand pipes
- Pipe junctions and networks
- Valves
- Inherent control valve characteristics
- System response to valving
- Effective control valve closure time
- Air valve modeling and sizing
- Surge Relief valves
- Pumps
- Homologous relationships
- Four-quadrant head and torque characterization
- Effect of pump speed change on transients
- Example of pump power failure transients
- Liquid Column Separation
- The phenomenon and demonstration
- Relevance to pipeline design
- The presence of free gas and the discrete free-gas cavity model
- Effect of pipe slope and frictional gradient
- Comparisons between simulations and test data
- Control of Transients
- System time constants and control strategy
- Experience with surge control design
- Discussions of real-life examples with various surge control schemes
- Summary
| Back to Top | | | Attendees’ Comments "This was an excellent seminar that breaks apart and presents the dynamics of fluid systems."
-Mark Warren, Project Manager, CTI Environmenta, Massillon, OH
"Excellent seminar that was presented well by experts in the field."
-Stephen Schlonker, Hydraulic Engineer, Army Corps of Engineers, Portland, OR
"The professors are very knowledgeable and presented the material in a clear organized manner. Going over the examples was very helfpul."
-Harry Cho, Associate Engineer, IRWD, Irvine, CA
"I learned a lot by attending this seminar. After attending this seminar, I understand about our systems better and will use what I learned from this seminar to plan, design and operate water distribution systems in a better way."
-Mao Fang, Senior Civil Engineer, Las Vegas Valley Water District, Las Vegas, NV
"I definitely enjoyed the enthusiasm demonstrated while presenting this highly technical material. This course increased my awareness of the magnitude of transient impacts."
-Shawn Mollus, Engineering Design Manager, Las Vegas Valley Water District, Las Vegas, NV
"This was the best class for understanding the processes involved in hydraulic transients."
-Nass Diallo, Las Vegas Valey Water District, Las Vegas, NV | Back to Top | | |
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