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.
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See calendarWebinar 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.