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Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction.

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Presentation on theme: "Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction."— Presentation transcript:

1 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Signal bursts and definition of visibility: Doppler component (solid line) and pedestal component (dashed line) Figure Legend:

2 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Optical measurement system of the turbulence length scales: (1) pump and tank, (2) horizontal table with micrometric displacement, (3) base, (4) glass pipe, (5) laser source (m: moving with 2, f: fixed near the wall), (6) photomultiplier (m: moving with 2, f: fixed), (7) bandpass filter, (8) digital storage oscilloscope and (9) computer, (---) laser beams, (—) and interfacing cable Figure Legend:

3 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Mean velocity profiles of water for U¯=0.806m∕s Figure Legend:

4 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Mean velocity profiles of water and glass beads at different flow mean velocities (Cv=1%); (—) theoretical profile Eq. ; (○) water alone; (●) solid particles Figure Legend:

5 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Comparison between the experimental results and those obtained by the model of Ohashi and Sugawara Figure Legend:

6 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Mean velocity profiles of the glass beads with various concentrations (dp=0.5mm, Re=16,200) Figure Legend:

7 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Variation of relative viscosity versus the volumetric concentration Figure Legend:

8 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Dimensionless velocities of the solid particles (dp=1mm) Figure Legend:

9 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Turbulence intensity of water and solid particles (Re=16,200, dp=1mm) Figure Legend:

10 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Reduction of turbulence intensity (Re=16,200, dp=1mm) Figure Legend:

11 Date of download: 9/17/2016 Copyright © ASME. All rights reserved. From: Measurement of Velocities in Two-Phase Flow by Laser Velocimetry: Interaction Between Solid Particles’ Motion and Turbulence J. Fluids Eng. 2008;130(7):071301-071301-10. doi:10.1115/1.2948358 Reduction of the lateral integral scale of turbulence, Re=16,200 Figure Legend:


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