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Particle-gas turbulence interactions in a kinetic theory approach to granular flows

Zhang, Y.L. and Reese, J.M. (2001) Particle-gas turbulence interactions in a kinetic theory approach to granular flows. International Journal of Multiphase Flow, 27 (11). pp. 1945-1964. ISSN 0301-9322

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Abstract

We describe a new two-fluid model for gas-solid flows that incorporates the gas turbulence influence on the random motion of the particles via a generalised kinetic theory, as well as a new gas turbulence modulation model. Simulation results for fully developed steady vertical pipe flows are in good quantitative agreement with experimental measurements. Our results show that the influence of gas turbulence on the particle microscopic flow behaviour cannot be ignored for relatively dilute flows, especially with smaller particles. Our new turbulent model captures the essential characteristics of gas turbulence modulation in the presence of particles, and can be solved for a wide range of particle-particle restitution coefficients.

Item type: Article
ID code: 5026
Keywords: gas-solid flows, granular flows, kinetic theory, turbulence modulation, two-fluid model, mechanical engineering, control systems, Mechanical engineering and machinery, Physics and Astronomy(all), Mechanical Engineering, Fluid Flow and Transfer Processes
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 20 Dec 2007
    Last modified: 04 Sep 2014 14:36
    URI: http://strathprints.strath.ac.uk/id/eprint/5026

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