Journal article
Two-phase flow insights into open-channel flows with suspended particles of different densities
Environmental fluid mechanics (Dordrecht, Netherlands : 2001), Vol.9(2), pp.161-186
04/01/2009
DOI: 10.1007/s10652-008-9102-7
Abstract
The effect of particle density on the turbulent open-channel flow carrying dilute particle suspensions is investigated using two specific gravities and three concentrations of solid particles. The particles, identical in size and similar in shape, were natural sand and a neutrally buoyant plastic. The particles were fully suspended, and formed no particle streaks on the channel’s bed. Accordingly, the changes in the flow are attributed to the interactions between suspended particles and flow turbulence structures. Measurements were obtained by means of image velocimetry enabling simultaneous, but distinct, measurement of liquid and particle velocities. The experimental results show that, irrespective of particle specific gravity, particle suspension influences bulk velocity of flow and the Kármán coefficient, while friction velocity essentially remains constant. The results also show that particles in suspension modify local water turbulence over the flow depth, but in ways not accurately predicted using the customary parameters for characterizing turbulence modification.
Details
- Title: Subtitle
- Two-phase flow insights into open-channel flows with suspended particles of different densities
- Creators
- M. Muste - University of IowaK. Yu - Dong-Eui UniversityI. Fujita - Kobe UniversityR. Ettema - University of Wyoming
- Resource Type
- Journal article
- Publication Details
- Environmental fluid mechanics (Dordrecht, Netherlands : 2001), Vol.9(2), pp.161-186
- Publisher
- Springer Netherlands
- DOI
- 10.1007/s10652-008-9102-7
- ISSN
- 1567-7419
- eISSN
- 1573-1510
- Language
- English
- Date published
- 04/01/2009
- Academic Unit
- IIHR--Hydroscience and Engineering; Geographical and Sustainability Sciences
- Record Identifier
- 9984460338402771
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