Open Channel Hydraulics and Design
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Agenda
Webinar instructions will be emailed before the date of the webinar.
Please log into the webinar 15 – 30 minutes before start time.
Tuesday, May 25, 2021
8:30 am – 4:30 pm CDT (incl. a 60-min break)
Presenter By: Dr. William J. Rahmeyer
Understanding Open Channel Flow
Basic concepts of open channel flows
Uniform and normal flow
Steady and unsteady flow
Reynold’s number
Laminar and turbulent flow
Definitions
Gradually varied flow definition
Hydraulic radius
Continuity principle
Energy principle
Examples of open channel flow
Design Fundamentals of Open Channel Flow
Application example of the energy equation
Channel shapes and properties
Manning’s Equation for normal depth
Compound channels
Specific energy diagram
Critical and normal depth
Calculating Froude number
Flow regimes of super and subcritical flow
Conservation of linear momentum
Flow Resistance in Open Channels
Flow shear
Rigid and alluvial (natural) boundaries
When Manning’s n is not constant
Cowan’s equation for additive resistance
Bed forms
Vegetated surfaces
Iterative solution of normal depths using
Manning’s equation
HEC-RAS
Sediment and its effect on resistance
Principles of Open Channel Flow Design
Classification of water surface profiles
Upstream and downstream control
Synthesis of composite profiles
Rapidly varied flow
Hydraulic jumps
Calculating flow depths in open channels (review)
Floods and storm runoff
Fluvial geomorphology and channel response
Stable Channel Design
Example of solving an open channel problem with diverging flows
Sedimentation, erosion, and deposition
Channel bank and bed protection
Hydraulic structures used in open channel flow
Culverts, flumes, weirs, and gates
Principles of open channel design
Example of designing a trapezoidal channel
Webinar Instructions
All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.
Certificates of completion can be downloaded in PDF form upon passing a short quiz. A link to the quiz will be sent to each qualifying attendee immediately after the webinar. The certificate can be downloaded from the Results page of the quiz upon scoring 80% or higher.
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Credits
Professional Engineers:
6.5 PDHs
Floodplain Managers:
6.5 ASFPM CECs
Continuing Education Credit Information
This webinar offers 6.5 PDHs to professional engineers licensed in most states.
HalfMoon Education is an approved continuing education sponsor for engineers in Florida (Provider No. 0004647), Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700), and North Carolina (S-0130). HalfMoon Education is deemed an approved continuing education sponsor for New York engineers via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2)). Other states do not preapprove continuing education providers or courses.
The Association of State Floodplain Managers has approved these courses for 6.5 CECs for floodplain managers.
Completion certificates will be awarded to participants who complete these events, respond to prompts, and earn a passing score (80%) on the quizzes that follow the presentations (multiple attempts allowed).
Speakers
William J. Rahmeyer
Emeritus Professor of Civil and Environmental Engineering at Utah State UniversityFor 31 years Mr. Rahmeyer was on the faculty at USU, and for 10 years he was on the research faculty at Colorado State University. Mr. Rahmeyer is the past department head of Civil and Environmental Engineering at USU as well as the senior professor of the Hydraulics and Fluid Mechanics program of the Utah Water Research Laboratory. He also served at USU as the Director of the Hydro Composite Modeling Program. He was also the division head of Water Engineering, the interim division head of both the Structures Division and the Transportation Division, he also served as the Undergraduate Curriculum Division Head. He is currently a part time senior associate for Ayres and Associates in Fort Collins, Colorado, where his primary role is to conduct national workshops in hydraulics, culvert flow, and urban drainage for the National Hydraulic Institute of FWHA. Mr. Rahmeyer is a Fellow and lifetime member in the American Society of Civil Engineers. He has been a member of several professional societies, and he served on committees for the American Society of Engineering Educators (ASEE), the American Society of Civil Engineers (ASCE), the International Association of Hydraulic Research (IAHR), the Association of State Dam Safety Officers (ASDSO), the Instrument Society of America (ISA), the American Water Works Association (AWWA), the International Erosion Control Association (IECA), and the American Society of Heating, Refrigerating and Air-Condition Engineers Association (ASHRAE). He has regularly attended and presented at the annual conferences of ASDSO, ASEE, ASCE, IAHR, ASCE National Department Heads, and the Transportation Research Board (TRB). In the past, he has been a member of the United States Committee on Large Dams (USCOLD) and the International Committee on Large Dams (ICOLD). Over the last several years, Mr. Rahmeyer has created and presented a workshop on open channel flow for Half Moon Education and finished serving on the Bluestone Dam UASCE IEPA and on several 100% DDR review panels for the USACE. He has been on the board of directors for the Utah Floodplain and Storm Water Management Association since 1986. Mr. Rahmeyer was a member the 2008 Bettelle “Final Independent Peer Review Report for U.S. Army Corps of Engineers on the Vegetation Policy for Local Flood Damage Reduction Systems” which reviewed many of the guidelines and policies for management of levees, floodwalls, embankment dams, and appurtenant structures. Some of his recent awards include the ASHRAE Technical/Symposium Paper Award, the ASHRAE Crosby Field Award for Research, and the South Pacific Division Regional Project Delivery Team Award from the U.S. Army Corps of Engineers. He has received the Idaho Transportation Department 2012 Excellence in Transportation Award and the 2011 ACEC of Idaho Engineering Excellence Grand Award for the I-84 New York Canal modeling and modification. Mr. Rahmeyer further received an honorable mention at the 2012 National AECE award ceremonies for his work with the I-84 New York Canal.