Abstract
ABSTRACTWe use large-scale molecular dynamics simulations to study aging of the velocity autocorrelation function of a force-free granular gas consisting of viscoelastic particles. We study the velocity autocorrelation function for a simplified model where the coefficient of restitution is constant for all collisions, but depends on current temperature of granular gas, it is called quasi-constant coefficient of restitution εeff. From our simulation results, it is observed that A(τw, τ) depends independently on both τ and τw. Initially, A(τw, τ) decays exponentially but later as τw increases, A(τw, τ) decays slowly due to emergence of correlations in velocity field. The explicit dependence of A(τw, τ) on τw implies that the system exhibits aging property.
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.
