Abstract
In this study the granular Leidenfrost effect in the absence of gravity is investigated numerically by means of the discrete element method. Apart from identifying the phenomena, a parametric study to quantify the influence of the coefficient of restitution and friction in the packing fraction of the granular media is carried on numerically. Surprisingly, both the coefficient of restitution and the coefficient of friction exhibit an influence of the same magnitude in the packing fraction of the granular system, which has not been reported in experiments and simulation of granular Leidenfrost regime under gravity or microgravity conditions.
Highlights
Driven granular materials exhibits different behavior depending on the filling and forcing conditions of the system [1], and may be classified into granular gases, granular liquids or granular solids, according to the volume fraction of the system and the kinetic energy of the particles [2]
The term granular Leidenfrost effect was first used by Eshuis et al [4] to define a region of dense particles supported by a region of dilute fast particles
There is a clear difference in the size of dense region, which reflects the differences in the packing fraction
Summary
Driven granular materials exhibits different behavior depending on the filling and forcing conditions of the system [1], and may be classified into granular gases, granular liquids or granular solids, according to the volume fraction of the system and the kinetic energy of the particles [2]. The granular Leidenfrost can be understood as analogous to the original Leidenfrost effect [5], which describes the effect of a water droplet hovering over a hot plate, supported by a gas region. This same effect has been employed in combination to vaporizable soft solids to power sustainable bouncing, in the so called elastic Leidenfrost effect [6]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
