Print Email Facebook Twitter Mechanics of dense suspensions in turbulent channel flows Title Mechanics of dense suspensions in turbulent channel flows Author Picano, F. Costa, P. Breugem, W.P. Brandt, L. Faculty Mechanical, Maritime and Materials Engineering Department Process and Energy Date 2015-08-28 Abstract Dense suspensions are usually investigated in the laminar limit where inertial effects are insignificant. When the flow rate is high enough, i.e. at high Reynolds number, the flow may become turbulent and the interaction between solid and liquid phases modifies the turbulence we know in single-phase fluids. In the present work, we study turbulent channel flows laden with finite-size particles at high volume fraction by means of Direct Numerical Simulations. A direct-forcing Immersed Boundary Method has been adopted to couple liquid and solid phases. We will show that the turbulence is attenuated in dense cases, even though the overall drag is increased because of the particle contribution to the total stress. To reference this document use: http://resolver.tudelft.nl/uuid:f51259c7-cce5-435a-99d1-1863b2b4e632 Source 15th European Turbulence Conference 2015 (ETC15), August 25-28th, 2015, Delft, The Netherlands Part of collection Institutional Repository Document type conference paper Rights (c) 2015 the Authors Files PDF 337.pdf 719.08 KB Close viewer /islandora/object/uuid:f51259c7-cce5-435a-99d1-1863b2b4e632/datastream/OBJ/view