PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Andrew Belmonte, Hope Shaffer.

Title:From Bouncing to Splashing: Impact of Rigid Spheres and Liquid Droplets on Elastic Membranes
Seminar:The Pritchard Lab Seminar
Speaker:Laurent Courbin, School of Engineering & Applied Sciences, Harvard University
Abstract:
Fluid motion can be drastically influenced by the nature of boundaries. Here, we explore problems where the elasticity of a substrate affects the dynamical response of fluid or fluid-like systems. We report the impact and subsequent bouncing of rigid spheres on stretched thin polymeric films. We rationalize our observations using scaling arguments. This allows us to present a diagram mapping different possible impact dynamics for elastic membrane systems. We extend these results to the study of the splashing behavior observed when a liquid droplet is released on a membrane. Splashing can be tuned and eventually suppressed by reducing the tension in the membrane. We provide a model for the tension dependence of this threshold based on a comparison between the fluid pressure upon impact and the elastic stress in the membrane.

Room Reservation Information

Room Number:MB216
Date:11 / 03 / 2008
Time:02:30pm - 03:30pm