HOME    »    PROGRAMS/ACTIVITIES    »    Annual Thematic Program
Talk Abstract
Relaxation-time Operator: Asymptotic Limits and Simulation

Jose Antonio Carrillo
Department of Mathematics C1200
University of Texas at Austin  RLM 8.100
carri@fireant.ma.utexas.edu
http://www.ma.utexas.edu/users/carri

 

In this talk I review some of the different asymptotics for the relaxation-time operator, proposed in the literature, from the numerical simulation point of view. By solving the kinetic equation in some model device, a n+-n-n+ diode, we study whether these different asymptotics take place in the channel and we compare the solution to the simulation of their corresponding macroscopic equation/s for each regime. Also, we show comparisons of relaxation-time kinetic system versus full Boltzmann-Poisson system solved by DSMC. We will discuss numerically the validity of this approximation.


Material from talk    pdf (565KB)    postscript (2MB)

Back to Workshop Schedule

Back to Reactive Flow and Transport Phenomena

Go