Book chapter
Experimental study on liquid and suspended sediment turbulence characteristics in open-channel flows
Engineering Turbulence Modelling and Experiments 5, pp.979-988
Elsevier Science Ltd
2002
DOI: 10.1016/B978-008044114-6/50094-6
Abstract
Many studies exhibit that the suspended sediment can substantially affect the turbulence characteristics of the carrier fluid in sediment-laden flows. This effect is essentially taken into account while modeling such flows. Another conventional modeling simplification is based on the assumption that fluid and particles have the same hydrodynamic characteristics. Recent experimental evidence however shows that this assumption is not that accurate. This chapter presents preliminary results of investigations on water and suspended sediment turbulence characteristics in an open-channel flow. Velocities for particles and water are measured, simultaneously, using particle tracking velocimetry (PTV). A self-adaptive, iterative, procedure for discarding the erroneous measurements introduced by the PTV technique was developed. For the experimental conditions investigated, the stream wise and vertical turbulence intensities of the water are enhanced by the addition of the sediment. The comparison between water and sediment turbulence intensities shows that the particle turbulence intensities are lower for water, both in the stream wise and vertical directions.
Details
- Title: Subtitle
- Experimental study on liquid and suspended sediment turbulence characteristics in open-channel flows
- Creators
- C. Di Cristo - University of Naples Federico IIM. Muste - University of Iowa
- Resource Type
- Book chapter
- Publication Details
- Engineering Turbulence Modelling and Experiments 5, pp.979-988
- Publisher
- Elsevier Science Ltd
- DOI
- 10.1016/B978-008044114-6/50094-6
- Language
- English
- Date published
- 2002
- Academic Unit
- IIHR--Hydroscience and Engineering; Geographical and Sustainability Sciences
- Record Identifier
- 9984479265702771
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