Experimental study of energy exchanges between two coupled granular gases | Zendy

Jean-Yonnel Chastaing | Zendy; Jean-Christophe Géminard | Zendy; Antoine Naert | Zendy

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Experimental study of energy exchanges between two coupled granular gases

Author(s) -

Jean-Yonnel Chastaing,

Jean-Christophe Géminard,

Antoine Naert

Publication year - 2016

Publication title -

physical review. e

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.896

H-Index - 304

eISSN - 2470-0053

pISSN - 2470-0045

DOI - 10.1103/physreve.94.062110

Subject(s) - dissipation , flux (metallurgy) , energy flux , coupling (piping) , energy (signal processing) , blade (archaeology) , mechanics , physics , materials science , thermodynamics , mechanical engineering , engineering , quantum mechanics , metallurgy , astronomy

International audienceWe report on the energy exchanges between two granular gases of different densities coupled electrome-chanically by immersed blades attached to dc motors. Zeroing the energy flux between the two subsystems, we demonstrate that an immersed blade is a convenient way to assess the properties of the granular gases, provided that the dissipation in the motor is properly taken into account. In addition, when the two gases have different densities, the fluctuations of the energy flux are asymmetric, very intermittent, and with most probable zero flux. We show that, for weak coupling, the main features of the energy exchanges can be explained considering the fluctuations of the two subsystems

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