Langevin equation elucidates the mechanism of the Rayleigh-Bénard instability by coupling molecular motions and macroscopic fluctuations.

@article{Zhang2017LangevinEE,
  title={Langevin equation elucidates the mechanism of the Rayleigh-B{\'e}nard instability by coupling molecular motions and macroscopic fluctuations.},
  author={Jun Zhang and Thomas {\"O}nskog},
  journal={Physical review. E},
  year={2017},
  volume={96 4-1},
  pages={
          043104
        }
}
It is well known that Brownian motion can be described using Langevin equation. In this paper we extend the application of the Langevin equation to the Rayleigh-Bénard (RB) flow, assuming that each molecule in the system is a Brownian particle colliding with its surrounding molecules. The phenomenon of thermal instability, changing from a conductive to a… CONTINUE READING