Start
Sep 15, 2016 - 17:00
End
Sep 15, 2016 - 18:00
Venue
Room No.118 Chemical Engg Dept.
Event Type
Speaker
Prof. Dibyendu Das IIT Bombay
Title
Universal scaling properties in dissipative granular systems undergoing clustering.
Abstract: A granular system of particles undergoing dissipative collisions show inhomogeneous density clustering under many circumstances. We focus on two types of problems: (i) the system is perturbed locally in space and (ii) the full system is globally perturbed initially and then left to cool freely. Scaling theories based on conservation laws and event driven molecular dynamics simulations of hard spheres provide two theoretical tools to study such systems. The scaling exponents of various statistical quantities evolving with time (e.g. the system energy) are independent of the value of the restitution co-efficient of the particles and are thus universal. Comparison is made with experimental data wherever available to confirm the theoretical predictions.Bio: Prof. Dibyendu Das received his Bachelors in Physics from IIT Kanpur. He did his PhD at Tata Institute of Fundamental Research Mumbai and was a Postdoctoral Fellow at Brandeis University. Currently he is Professor of Physics at IIT Bombay.
Note: Attendance is mandatory for those enrolled in CL 702.