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|
|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
|Date:||01 / 29 / 2010|
|Time:||03:35pm - 04:25pm|