23 mars 2021

Seminar Rafik Ouchene

Rafik Ouchene is a teacher and research engineer at Elisa Aerospace. Graduated from the University of Boumerdès (UMBB) and of the University of Bordeaux 1 and holder of a doctorate in energy mechanics from the University of Lorraine (UL, 2015), he joined Elisa Aerospace in 2019 after spending a year at Polytech Nancy (formerly ESSTIN) and one year at Polytech Lyon as a temporary teaching and research associate, and 21 months as a post-doctoral fellow at the Ecole Centrale de Lyon. His research activities focus on the turbulent dispersed phase flows he has developed by attending laboratories (I2M, LEMTA, LMFA) and through the ANR-PLAYER, ANR-WINDOV, COST ACTION FP1005 projects. He is teaching fluid mechanics, aerodynamics and heat transfer.
On the motion of non-spherical particles in turbulent channel flow

Abstract: Widely present in many environmental and industrial applications such as pollen transport, micro-organism turbulent dispersion or wood fibres in paper pulp, non-spherical particle transport in turbulent flows has been increasingly investigated in numerous experimental and numerical studies. Since particles can have an indefinite possibility of shapes and sizes, focus has been put on spheroidal particles that can describe both elongated (fibres of cellulose pulp or straw) and flattened particles (flakes or wood chips). Non-spherical particle motion has been widely investigated in the last decades. An interesting analysis of the different investigations has been provided by Voth and Soldati (Annu. Rev. Fluid Mech 2017). In this talk, some results of the hydrodynamic forces acting on ellipsoidal particles and the transport of such particles in a turbulent channel flow will be addressed.

23 mars 2021, 10h0011h00
Webinar (please contact J.-P. Laval for the link)

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28 mars 2024

Webinar Rui Ni

The Wrath of the Small: Fragmentation of Bubbles in Turbulence by Small Eddies

Rui Ni is an Associate Professor in Mechanical Engineering at Johns Hopkins University and was appointed as the DOE ORISE professor in 2019. Prior to joining JHU, he was the endowed Kenneth K. Kuo Early Career Professor at Penn State University. He received his Ph.D. in the Department of Physics from the Chinese University of Hong Kong in 2011, and worked as a postdoctoral scholar at Yale and Wesleyan University. He received an NSF CAREER award in fluid dynamics, ACS-PRF New Investigator Award, and NASA Early Stage Investigation award. His primary research focus is the development of advanced experimental methods for understanding multiphase flows in many applications, such as energy systems, emulsion, particle ingestion in gas turbines, landings on extraterrestrial bodies, and dust mitigation for future space exploration.