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A Two-Way Coupled Reynolds Stress Model for Suspensions with Comparison to Experiment

Citation

Skjaeraasen, O and Skartlien, R and Zarruk Serrano, GA, A Two-Way Coupled Reynolds Stress Model for Suspensions with Comparison to Experiment, Proceedings of the 7th International Conference on Multiphase Flow, 30 May - 4 June 2010, Tampa, Florida, pp. 1-7. (2010) [Refereed Conference Paper]


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Abstract

Experimental analysis of dilute suspension flow in a turbulent channel was performed using time-resolved particle image velocimetry and particle tracking velocimetry. The active particles had a mean diameter of 230 m and a relative density of 1.15. The mean particle volume fraction varied between 1:3  10􀀀4 and 1:8  10􀀀4. The particle properties and concentration were chosen to simulate the properties of light sand suspensions in oil pipelines, while ignoring particle wetting effects. Three experiments with Reynolds numbers 10,000, 20,000, and 30,000 are presented. The mean velocity profiles of the carrier fluid (water) was not significantly modified by the presence of particles except at Reynolds number 30,000 where the mean fluid velocity was enhanced along the top half of the channel. This is attributed to the low particle concentration of particles in this region. Particle settling is observed in the two lower Reynolds numbers tested. Results indicate a strong influence of the motion of settling particles on the carrier fluid turbulence. Turbulence is suppressed over the bulk of the flow but there is a strong enhancement of the wall-normal turbulence in the Reynolds number 20,000 case, compared to the other two cases. This behavior is attributed to the flow being in transition from a settling suspension to fully suspended flow conditions

Item Details

Item Type:Refereed Conference Paper
Keywords:Two-way coupled Reynolds stress model suspensions
Research Division:Physical Sciences
Research Group:Classical Physics
Research Field:Fluid Physics
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Zarruk Serrano, GA (Dr Gustavo Zarruk Serrano)
ID Code:88458
Year Published:2010
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-02-04
Last Modified:2014-09-01
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