On stability of blow-up solutions of the Burgers vortex type for the Navier-Stokes equations with a linear strain

開催日時: 
2019/05/29 Wed 16:30 - 17:30
場所: 
3号館110講演室
講演者: 
Yasunori Maekawa
講演者所属: 
Kyoto University, Mathematics Department
概要: 

We discuss the three-dimensional Navier-Stokes equations in the presence of the axisymmetric linear strain, where the strain rate depends on time in a specific manner. It is known that the system admits solutions which blow up in finite time and whose profiles are in a backward self-similar form of the familiar Burgers vortices.
In this talk it is shown that the existing stability theory of the Burgers vortex leads to the stability of these blow-up solutions as well.
The secondary blow-up is also observed when the strain rate is relatively weak.
Joint work with Christophe Prange (Universite de Bordeaux) and Hideyuki Miura (Tokyo Institute of Technology).