PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Andrew Belmonte, Yuxi Zheng, Kris Jenssen.

Title:Understanding the Dynamics and Mechanics of Complex Fluids
Seminar:Computational and Applied Mathematics Colloquium
Speaker:Christel Hohenegger, Courant Institute
Abstract:
One of the challenges in modeling the transport properties of complex fluids (e.g. many biofluids, polymer solutions, particle suspensions) is describing the interaction between the suspended micro-structure with the fluid itself. I will discuss two applications. Suspensions of active particles, like swimming bacteria or artificial micro-swimmers, have been studied intensely over the past few years. Using a recently derived kinetic model, I have investigated the linearized structure of such an active system near a state of uniformity and isotropy. As a result a prediction about the onset of the instability as a function of the volume concentration of anterior actuated swimmers can be made. Microrheology is a recent experimental method which seeks to use statistical quantities to estimate the viscous and elastic properties of materials from very small volume samples. Following the basic model of two-point microrheology, I have developed a Langevin-based model of the coupled fluctuations of two beads in a viscoelastic liquid and from this derive new relations between measurable quantities and fluid response properties.

Room Reservation Information

Room Number:MB106
Date:01 / 29 / 2010
Time:03:35pm - 04:25pm