Sturm, Terry W. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia.
- Effect of gravity
- Depth of flow
- Steady, nonuniform flow
- Unsteady flow
- Froude number
- Flow regimes
- Links to Primary Literature
- Additional Readings
A natural or artificial conveyance through which liquid (typically water) having a free surface moves. The free surface is the interface with a gas (usually the atmosphere), along which the pressure is constant. The liquid is accelerated or decelerated in the flow direction due to an imbalance between the driving gravity force and the viscous boundary resistance force (friction). Such flows occur naturally in rivers, streams, and estuaries as a part of the hydrologic process of surface runoff and artificially in free-surface conduits for the transport of water for irrigation, water supply, drainage, flood control, and other useful purposes. In contrast to full pipe flow, the free surface introduces an additional freedom into the description of open-channel flow, which is the position of the free surface itself as it adjusts to the imposed flow conditions. See also: Canal; Pipe flow; River; Viscosity
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Its dedicated editorial team is led by Sagan Award winner John Rennie. Contributors include more than 9000 highly qualified scientists and 42 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 17,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information