Mechanics of dense suspensions in turbulent channel flows

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

Mechanics of dense suspensions in turbulent channel flows

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

Fluid Mechanics

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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.

Original language	English
Title of host publication	Proceedings 15th European Turbulence Conference
Editors	D Lohse, BJ Boersma
Place of Publication	Delft, The Netherlands
Publisher	Delft University of Technology
Number of pages	2
Publication status	Published - 2015
Event	The 15th European Turbulence Conference, ETC-15, Delft, The Netherlands - s.l. Duration: 25 Aug 2015 → 28 Aug 2015

Conference

Conference	The 15th European Turbulence Conference, ETC-15, Delft, The Netherlands
Period	25/08/15 → 28/08/15

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Cite this

@inproceedings{a18fb05e8ecb468685c4a011aa2a23cf,

title = "Mechanics of dense suspensions in turbulent channel flows",

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.",

author = "Francesco Picano and \{Sim{\~o}es Costa\}, Pedro and Wim-Paul Breugem and Luca Brandt",

year = "2015",

language = "English",

editor = "D Lohse and BJ Boersma",

booktitle = "Proceedings 15th European Turbulence Conference",

publisher = "Delft University of Technology",

address = "Netherlands",

note = "The 15th European Turbulence Conference, ETC-15, Delft, The Netherlands ; Conference date: 25-08-2015 Through 28-08-2015",

}

Picano, F, Simões Costa, P, Breugem, W-P & Brandt, L 2015, Mechanics of dense suspensions in turbulent channel flows. in D Lohse & BJ Boersma (eds), Proceedings 15th European Turbulence Conference. Delft University of Technology, Delft, The Netherlands, The 15th European Turbulence Conference, ETC-15, Delft, The Netherlands, 25/08/15. <http://resolver.tudelft.nl/uuid:f51259c7-cce5-435a-99d1-1863b2b4e632>

Mechanics of dense suspensions in turbulent channel flows. / Picano, Francesco; Simões Costa, Pedro; Breugem, Wim-Paul et al.
Proceedings 15th European Turbulence Conference. ed. / D Lohse; BJ Boersma. Delft, The Netherlands: Delft University of Technology, 2015.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Mechanics of dense suspensions in turbulent channel flows

AU - Picano, Francesco

AU - Simões Costa, Pedro

AU - Breugem, Wim-Paul

AU - Brandt, Luca

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85085774123

M3 - Conference contribution

BT - Proceedings 15th European Turbulence Conference

A2 - Lohse, D

A2 - Boersma, BJ

PB - Delft University of Technology

CY - Delft, The Netherlands

T2 - The 15th European Turbulence Conference, ETC-15, Delft, The Netherlands

Y2 - 25 August 2015 through 28 August 2015

ER -

Mechanics of dense suspensions in turbulent channel flows

Abstract

Conference

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