|
Description: |
In the Eulerian approach, the motion of an incompressible fluid is usually described by the velocity field which is given by the Navier-Stokes system. The velocity field generates a flow in the space of volume-preserving diffeomorphisms. The latter plays a central role in the Lagrangian description of a fluid, since it allows to identify the trajectories of the individual particles. In this talk, I will show that the velocity field of the fluid and the corresponding flow of diffeomorphisms can be simultaneously approximately controlled using a finite-dimensional external force. The proof is based on some methods from the geometric control theory introduced by Agrachev and Sarychev.
|
Date: |
|
Start Time: |
14:00 |
Speaker: |
Vahagn Nersesyan (Univ. Versailles, France)
|
Institution: |
University of Versailles, France
|
Place: |
Sala 5.5
|
Research Groups: |
-Analysis
|
See more:
|
<Main>
|
|