Solutions to the Boltzmann Equation in the Boussinesq Regime

  title={Solutions to the Boltzmann Equation in the Boussinesq Regime},
  author={Raffaele Esposito and Rossana Marra and Joel L Lebowitz},
We consider a gas in a horizontal slab in which the top and bottom walls are kept at different temperatures. The system is described by the Boltzmann equation (BE) with Maxwellian boundary conditions specifying the wall temperatures. We study the behavior of the system when the Knudsen number e. is small and the temperature difference between the walls as well as the velocity field is of order E, while the gravitational force is of order e. We prove that there exists a solution to the BE for t… CONTINUE READING