Mechanics of dense suspensions in turbulent channel flows

Francesco Picano, Pedro Simões Costa, Wim-Paul Breugem, Luca Brandt

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


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.
Original languageEnglish
Title of host publicationProceedings 15th European Turbulence Conference
EditorsD Lohse, BJ Boersma
Place of PublicationDelft, The Netherlands
PublisherDelft University of Technology
Number of pages2
Publication statusPublished - 2015
EventThe 15th European Turbulence Conference, ETC-15, Delft, The Netherlands - s.l.
Duration: 25 Aug 201528 Aug 2015


ConferenceThe 15th European Turbulence Conference, ETC-15, Delft, The Netherlands


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