|Description:||Mechanical & Aerospace Engineering
Fall 2012 Seminar Series
Thursday, October 25 at 4-5PM in MEC-341
Recent Results of Rarefied Gas Dynamics
and their Application to Practice
Departamento de Fisica,
Universidade Federal do Parana
In the hydrodynamic regime the Navier-Stokes equation is applied to calculate gas flows, while in the free molecular regime the intermolecular collisions can be neglected and the motion of every molecule can be considered independently on each other. However, the transition regime (when the molecular mean free path is comparable with a channel size) represents many difficulties for practical calculations because the kinetic Boltzmann equation must be applied. Another approach for this regime is the Direct Simulation Monte Carlo (DSMC) method. Both approaches require great computational efforts. That is why many engineers prefer to substitute such calculations by estimations, which in some situations lead to quite incorrect results. At the same time, many rigorous results for the transition regime already obtained from the Boltzmann equation and by the DSMC method can be easily used in practical calculations.
In the presentation, a review the recent results of rarefied gas dynamics will be given with examples of their applications to practice. More specifically, one-dimensional and two dimensional internal gas flows in the transition regime will be considered. Some information about the peculiarities of gaseous mixture flows will be given.
Host: Harsha Chelliah (firstname.lastname@example.org)
To meet with speaker: Lori Mohr Pedersen (email@example.com)
|Date:||Thursday, October 25, 2012|
|Created by:||Min (Kenny) Chang|
|Updated:||Wednesday, October 24, 2012 7:52pm GMT|