I see some papers mentioning the fluctuating hydrodynamics, which originates from the Landau-Lifshitz Navier-Stokes (LLNS) equation. I know that the LLNS equation has added a thermal fluctuation term to the N-S equation, but I still couldn't find it on the Landau-Lifshitz Fluid Mechanics book. The references of those papers just say it is in the Landau-Lifshitz book, without telling me exactly which page it is on. Anyone know this? Thanks.