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Radiation induces turbulence in particle-laden fluids

Zamansky, Rémi and Coletti, Filippo and Massot, Marc and Mani, Ali Radiation induces turbulence in particle-laden fluids. (2014) Physics of Fluids, 26 (7). 071701-071701. ISSN 1070-6631

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Official URL: http://dx.doi.org/10.1063/1.4890296

Abstract

When a transparent fluid laden with solid particles is subject to radiative heating, non-uniformities in particle distribution result in local fluid temperature fluctuations. Under the influence of gravity, buoyancy induces vortical fluid motion which can lead to strong preferential concentration, enhancing the local heating and more non- uniformities in particle distribution. By employing direct numerical simulations this study shows that the described feedback loop can create and sustain turbulence. The velocity and length scale of the resulting turbulence is not known a priori, and is set by balance between viscous forces and buoyancy effects. When the particle response time is comparable to a viscous time scale, introduced in our analysis, the system exhibits intense fluctuations of turbulent kinetic energy and strong preferential concentration of particles

Item Type:Article
Additional Information:Thanks to American Institute of Physics (AIP) editor. The definitive version is available at http://scitation.aip.org The original PDF of the article can be found at American Institute of Physics (AIP)website : http://scitation.aip.org/content/aip/journal/pof2/26/7/10.1063/1.4890296
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > National Aeronautics and Space Administration - NASA (USA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Ecole Centrale Paris (FRANCE)
French research institutions > Institut National des Sciences Mathématiques et de leurs Interactions - INSMI (FRANCE)
Other partners > Institut des Sciences de l’Ingénierie et des Systèmes - INSIS (FRANCE)
Other partners > Stanford University (USA)
Laboratory name:
Funders:
Bosch LLC - Charles Lee Powell Foundation (PI: A.M.) - France-Stanford Center for Interdisciplinary Studies
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Deposited By: Remi ZAMANSKY
Deposited On:24 Jun 2015 09:49

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