Print Email Facebook Twitter Numerical simulation of particle-laden turbulent channel flow Title Numerical simulation of particle-laden turbulent channel flow Author Li, Y. McLaughlin, J.B. Kontomaris, K. Portela, L. Faculty Applied Sciences Date 2001-06-29 Abstract This paper presents results for the behavior of particle-laden gases in a small Reynolds number vertical channel down flow. Results will be presented for the effects of particle feedback on the gas-phase turbulence and for the concentration profile of the particles. The effects of density ratio, mass loading, and particle inertia will be discussed. The results were obtained from a numerical simulation that included the effects of particle feedback on the gas phase and particle–particle collisions. The resolution of the simulation was comparable to the smallest scales in the particle-free flow, but the grid spacings were larger than the particle size. Particle mass loadings up to 2 and both elastic and inelastic collisions were considered. Particle feedback causes the turbulent intensities to become more anisotropic as the particle loading is increased. For small mass loadings, the particles cause an increase in the gas flow rate. It will be shown that the particles tend to increase the characteristic length scales of the fluctuations in the streamwise component of velocity and that this reduces the transfer of turbulent energy between the streamwise component of velocity and the components transverse to the flow. Particle–particle collisions greatly reduce the tendency of particles to accumulate at the wall for the range of mass loadings considered. This was true even when the collisions were inelastic. Subject numerical analysisturbulencechannel flowtwo-phase flowfluctuationsflow simulation To reference this document use: http://resolver.tudelft.nl/uuid:469616a2-2fd9-4a92-b21f-2143e62dc721 DOI https://doi.org/10.1063/1.1396846 Publisher American Institute of Physics ISSN 1070-6631 Source http://link.aip.org/link/PHFLE6/v13/i10/p2957/s1 Source Physics of Fluids, 13 (10), 2001 Part of collection Institutional Repository Document type journal article Rights (c) 2001 The Author(s); American Institute of Physics Files PDF Portela_2001.pdf 361.5 KB Close viewer /islandora/object/uuid:469616a2-2fd9-4a92-b21f-2143e62dc721/datastream/OBJ/view