Skip to main content
    • Aa
    • Aa

Particle response and turbulence modification in fully developed channel flow

  • J. D. Kulick (a1), J. R. Fessler (a1) and J. K. Eaton (a1)

The interactions between small dense particles and fluid turbulence have been investigated in a downflow fully developed channel in air. Particle velocities of, and fluid velocities in the presence of, 50 μm glass, 90 μm glass and 70 μm copper spherical beads were measured by laser Doppler anemometry, at particle mass loadings up to 80%. These particles were smaller than the Kolmogorov lengthscale of the flow and could respond to some but not all of the scales of turbulent motion. Streamwise mean particle velocity profiles were flatter than the mean fluid velocity profile, which was unmodified by particle loading. Particle velocity fluctuation intensities were larger than the unladen-fluid turbulence intensity in the streamwise direction but were smaller in the transverse direction. Fluid turbulence was attenuated by the addition of particles; the degree of attenuation increased with particle Stokes number, particle mass loading and distance from the wall. Turbulence was more strongly attenuated in the transverse than in the streamwise direction, because the turbulence energy is at higher frequencies in the transverse direction. Streamwise turbulence attenuation displayed a range of preferred frequencies where attenuation was strongest.

Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

Csanady, G. T.1963Turbulent diffusion of heavy particles in the atmosphere. J. Atmos. Sci.21, 222225.

Elghobashi, S. E. & Abou-Arab, T. W.1983A two-equation turbulence model for two-phase flows. Phys. Fluids26, 931938.

Elghobashi, S. E. & Truesdell, G. C.1993On the two-way interaction between homogeneous turbulence and dispersed solid particles. I: Turbulence modification. Phys. Fluids A 5, 17901801.

Gaster, M. & Roberts, J. B.1977The spectral analysis of randomly sampled records by direct transform. Proc. R. Soc. Lond. A 354, 2758.

Liljegren, L. M.1993The effect of a mean fluid velocity gradient on the streamwise velocity variance of a particle suspended in a turbulent flow. Intl J. Multiphase Flow19, 471484.

Mansour, N. N., Kim, J. & Moin, P.1988Reynolds-stress and dissipation-rate budgets in a turbulent channel flow. J. Fluid Mech.194, 1544.

Mansour, N. N., Kim, J. & Moin, P.1989Near-wall k-ε turbulence modeling. AIAA J.27, 10681073.

Maxey, M. R. & Riley, J. J.1983Equation of motion for a small rigid sphere in a nonuniform flow. Phys. Fluids26, 441165.

Rashidi, M., Hetsroni, G. & Banerjee, S.1990Particle-turbulence interaction in a boundary-layer. Intl J. Multiphase Flow16, 935949.

Reeks, M. W.1977On the dispersion of small particles suspended in an isotropic turbulent fluid. J. Fluid Mech.83, 529546.

Rizk, M. A. & Elghobashi, S. E.1985The motion of a spherical particle suspended in a turbulent flow near a plane wall. Phys. Fluids28, 806817.

Rizk, M. A. & Elghobashi, S. E.1989A two-equation turbulence model for dispersed dilute confined two-phase flows. Intl J. Multiphase Flow15, 119133.

Rogers, C. B. & Eaton, J. K.1991The effect of small particles on fluid turbulence in a flat-plate, turbulent boundary layer in air. Phys. Fluids A 3, 928937.

Snyder, W. H. & Lumley, J. L.1971Some measurements of particle velocity auto-correlation functions in a turbulent flow. J. Fluid Mech.48, 4171.

Sommerfeld, M.1992Modelling of particle-wall collisions in confined gas-particle flows. Intl J. Multiphase Flow18, 905926.

Soo, S. L.1956Statistical properties of momentum transfer in two-phase flow. Chem. Engng Sci.5, 5767.

Squires, K. D. & Eaton, J. K.1990bParticle response and turbulence modification in isotropic turbulence. Phys. Fluids A 2, 11911203.

Squires, K. D. & Eaton, J. K.1991Measurements of particle dispersion obtained from direct numerical simulations of isotropic turbulence. J. Fluid Mech.226, 135.

Tsuji, Y., Morikawa, Y. & Shiomi, H.1984LDV measurements of an air-solids two-phase flow in a horizontal pipe. J. Fluid Mech.139, 417434.

Wells, M. R. & Stock, D. E.1983The effect of crossing trajectories on the dispersion of particles in a turbulent flow. J. Fluid Mech.136, 3162.

Yudine, M. I.1959Physical considerations on heavy particle diffusion. Adv. Geophys.6, 185191.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Fluid Mechanics
  • ISSN: 0022-1120
  • EISSN: 1469-7645
  • URL: /core/journals/journal-of-fluid-mechanics
Please enter your name
Please enter a valid email address
Who would you like to send this to? *