Chapter
Apr 26, 2012
Stochastic Non-Equilibrium Bedload Transport Model
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
Sediment particle transport can be viewed as a Markov chain. In a nonequilibrium condition, the interchange of sediment particles occurs not only between the bedload layer and the bed surface, but also across the interface between bedload and suspended load. The bedload transport rate is the product of the total particle volume in saltation and the average saltating velocity. We can quantify the number of saltating particles by modeling the occupancy probabilities vector of particles staying in three states (i.e., bed surface, bedload layer, and the interchange layer between the bedload and the suspended load.). The new stochastic bedload relation is validated against existing bedload model (Soong and Graf 1997). The influence of sudden changes in flow-sediment properties on the bedload transport rate is investigated in this preliminary study.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Bed loads
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Highway and road management
- Highway transportation
- Highways and roads
- Infrastructure
- Interchanges
- Materials engineering
- Mathematics
- Particles
- Probability
- River and stream beds
- River engineering
- Rivers and streams
- Sediment
- Sediment transport
- Static loads
- Statics (mechanics)
- Stochastic processes
- Suspended loads
- Thermodynamics
- Transport phenomena
- Transport rates
- Transportation engineering
- Water and water resources
Authors
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Research Assistant, 207 Jarvis Hall, Department of Civil, Structural, and Environmental Engineering, State University of New York at Buffalo, Buffalo, NY 14260, USA (. E-mail: [email protected])
Associate Professor, 233 Jarvis Hall, Department of Civil, Structural, and Environmental Engineering, State University of New York at Buffalo, Buffalo, NY 14260, USA (. E-mail: [email protected])
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