Deadzone in a Granular Jet Impact

granular jet deadzone
A blue deadzone forms in the cross section of a granular jet striking a target.  

A simulation of a stream of granular particles striking a target shows that the stream deflects into a hollow conical sheet. The dark blue portion indicates particles that are nearly stationary in the stream, confirming experiments that have revealed the formation of a “dead zone” where the grains effectively come to a stop. 

Related Abstract

Gray arrow  Simulations of granular jet impact deadzone formation

Reporters and Editors

Reporters may freely use this image. Credit format: Image courtesy of Nicholas Guttenberg, University of Chicago (2011).