For more information about this meeting, contact Andrew Belmonte, Hope Shaffer.
|Title:||Interfacial instabilities of reactive micellar fluids|
|Seminar:||The Pritchard Lab Seminar|
|Speaker:||Andrew Belmonte, Dept of Mathematics, Penn State University|
|Many fluid instabilities involving free surfaces are governed by interfacial forces - the classic example being surface tension. However, complex fluids often have other surface forces due to physical processes not present in the bulk. A striking example of this has been observed for viscoelastic micellar fluids, in which long tubelike aggregates form at low concentrations due to the presence of an organic salt/cosurfactant, without which the micelles are spherical and the fluid is completely Newtonian. I will present some recent experimental observations and modeling of instabilities occurring when two such Newtonian fluids react at their interface to produce a fragile elastic micellar material, including droplet splashes, sedimentation, and Hele-Shaw fingering.|
Room Reservation Information
|Date:||10 / 05 / 2009|
|Time:||02:30pm - 03:30pm|