## THERMAL SCIENCE

International Scientific Journal

### NUMERICAL INVESTIGATION OF PARTICLES TURBULENT DISPERSION IN CHANNEL FLOW

**ABSTRACT**

This paper investigates the performance of Reynolds-averaged Navier-Stokes model on dispersion of particles in wall turbulence. A direct numerical simulation of wall-bounded channel flow with particles suspensions was set as a benchmark. The standard k-ω model coupled with two different eddy interaction models was used in Reynolds-averaged Navier-Stokes model and compared to the direct numerical simulation. Detailed comparisons between direct numerical simulation and Reynolds-averaged Navier-Stokes model on particle distribution evolving over time were carried out.

**KEYWORDS**

PAPER SUBMITTED: 2012-08-01

PAPER REVISED: 2012-09-01

PAPER ACCEPTED: 2012-09-12

**THERMAL SCIENCE** YEAR

**2012**, VOLUME

**16**, ISSUE

**Issue 5**, PAGES [1510 - 1514]

- Eaton, J. K., Fessler, J. R., Preferential Concentration of Particles by Turbulence, Int. J. Multiphase Flow, 20 (1994), Suppl. 1, pp. 169-209
- Marchioli, C., Soldati, A., Mechanisms for Particle Transfer and Segregation in Turbulent Boundary Layer, J. Fluid Mech., 468 (2002), pp. 283-315
- Lin, J. Z., Shi, X., Yu, Z. S., The Motion of Fibers in an Evolving Mixing Layer, Int. J. Multiphase flow, 29 (2003), 8, pp. 1355-1372
- Yamamoto, Y., et al., Large-Eddy Simulation of Turbulent Gas Particle Flow in a Vertical Channel: Effect of Considering Inter-Particle Collisions, J. Fluid Mech., 422 (2001), pp. 303-334
- Yu, M. Z., et al., Large Eddy Simulation of a Planar Jet Flow with Nanoparticle Coagulation, Acta Mechanica Sinica, 22 (2006), 4, pp. 293-300
- Yu, M. Z., Lin, J. Z., Chan, T. L., Numerical Simulation for Nucleated Vehicle Exhaust Particulate Matters via the TEMOM/LES Method, Int. J. of Modern Physics C, 20 (2009), 3, pp. 399-421
- Lin, J. Z., Zhang, W. F., Yu, Z. S., Numerical Research on the Orientation Distribution of Fibers Immersed in Laminar and Turbulent Pipe Flows, J. of Aerosol Sci., 35 (2004), 1, pp. 63-82
- Zhang, S. L., Lin, J. Z., Zhang, W. F., Numerical Research on the Fiber Suspensions in a Turbulent T- -Shaped Branching Channel Flow, Chinese J. Chem. Eng., 15 (2007), 1, pp. 30-38
- Lin, J. Z., Zhang, S. L., Olson, J. A., Computing Orientation Distribution and Rheology of Turbulent Fiber Suspensions Flowing through a Contraction, Eng. Computations, 24 (2007), 1, pp. 52-76
- Smith, P. J., Fletcher, T. H., Smoot, L. D., Model for Pulverized Coal-Fired Reactors, Proceedings, Symp. (Int.) on Combustion, Waterloo, Ont., Canada, The Combustion Institute, 1981, pp. 1285-1293
- Graham, D. I., Improved Eddy Interaction Models with Random Length and Time Scales, Int. J. Multiphase Flow, 24 (1998), pp. 2, 335-345
- Chen, X. Q., Heavy Particle Dispersion in Inhomogeneous, Anisotropic, Turbulent Flows, Int. J. Multiphase Flow, 26 (2000), 4, pp. 635-661
- Agnihotri, V., et al., An Eddy Interaction Model for Particle Deposition, J. Aerosol Sci., 47 (2012), 1, pp. 39-47
- Wang, Y., James, P. W., On the Effect of Anisotropy on the Turbulent Dispersion and Deposition of Small Particles, Int. J. Multiphase Flow, 25 (1999), 3, pp. 551-558
- Kim, J., Moin, P., Moser, R., Turbulence Statistics in Fully Developed Channel Flow at Low Reynolds Number, J. Fluid Mech., 177 (1987), pp. 133-166
- Mansour, N. N., Kim, J., Moin, P., Reynolds-Stress and Dissipation-Rate Budgets in a Turbulent Channel Flow, J. Fluid Mech., 194 (1988), pp. 15-44
- Zhao, L. H., Andersson, H. I., Gillissen, J. J., Turbulence Modulation and Drag Reduction by Spherical Particles, Phys. Fluids, 22 (2010), pp. 1702-1708