Turbulence Attenuation by Small Particles in Simple Shear Flows

[+] Author and Article Information
David I. Graham

School of Mathematics and Statistics, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, UK,e-mail: dgraham@plymouth.ac.uk

J. Fluids Eng 122(1), 134-137 (Nov 03, 1999) (4 pages) doi:10.1115/1.483235 History: Received August 03, 1998; Revised November 03, 1999
Copyright © 2000 by ASME
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Gore,  R. A., and Crowe,  C. T., 1989, “Effect of Particle Size on Modulating Turbulent Intensity,” Int. J. Multiphase Flow, 15, pp. 279–285.
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Squires,  K. D., and Eaton,  J. K., 1990, “Particle Response and Turbulence Modification in Isotropic Turbulence,” Phys. Fluids A, 2, pp. 1191–1203.
Graham, D. I., 1998, “Turbulence Modulation by Particles in Homogeneous Shear,” paper 5008, ASME FED Summer Meeting, Washington, DC.
Graham,  D. I., 1997, “Turbulence Modification in the Limiting Cases of Heavy- and Tracer-Particles,” ASME J. Fluids Eng., 119, No. 2, pp. 458–460.
Libby, P. A., 1996, An Introduction to Turbulence, Taylor & Francis, New York.
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Kulick,  J. D., Fessler,  J. R., and Eaton,  J. K., 1994, “Preferential Concentration of Heavy Particles in a Turbulent Channel Flow,” Phys. Fluids, 6, pp. 3742–3749.
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Grahic Jump Location
(a) Comparison between prediction from Eq. (14) and DNS results of Squires and Eaton 8. (b) Comparison between prediction from Eq. (13) and DNS results of Squires and Eaton 8. Lines: predictions; (symbols) experiments; (squares and solid lines) St=0.38; (circles and dot-dash line), St=1.9; (diamonds and dashed lines); St=3.8.
Grahic Jump Location
(a) Comparison between predictions of Eq. (14) with pipe flow results of Varksin et al. 7. (b) Comparison between predictions of Eq. (13) with pipe flow results of Varksin et al. 7. Lines: predictions, (symbols) experiments; (thick lines) Cs=1, (thin lines) Cs=0, (squares and solid lines) St=0.94 (50 mic alum. oxide); (crosses and dot-dash lines) St=0.6 (50 mic glass); (circles and dashed lines) St=2.4 (100 mic glass).
Grahic Jump Location
Comparison between predictions of Eq. (13) and experimental results of Kulick et al. 10. Line: prediction, (symbol) experiments (70 mic copper).



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