Special Session 5: Recent developments in Partial Differential Equations from Physics

The 3D kinetic Couette flow via the Boltzmann equation in the diffusive limit

Anita Yang
The Chinese University of Hong Kong
Hong Kong
Co-Author(s):    Renjun Duan, Shuangqian Liu, Robert M. Strain
Abstract:
In this talk, we will study the Boltzmann equation in the diffusive limit in a channel domain $\T^2\times (-1,1)$ for the 3D kinetic Couette flow. Our results demonstrate that the first-order approximation of the solutions is governed by the perturbed incompressible Navier-Stokes-Fourier system around the fluid Couette flow. Moreover, in the absence of external forces, the 3D kinetic Couette flow asymptotically converges over time to the 1D steady planar kinetic Couette flow. This is a joint work with Prof. Renjun Duan, Prof. Shuangqian Liu and Prof. Robert M. Strain.