3D spinodal decomposition in the inertial regime

We simulate late-stage coarsening of a 3D symmetric binary fluid using a la ttice Boltzmann method. With reduced lengths and times, l and t, respective ly (with scales set by viscosity, density, and surface tension), our data s ets cover 1 less than or similar to l less than or similar to 10(5) and 10 less than or similar to t less than or similar to 10(8). We achieve Reynold s numbers approaching 350. At Re greater than or similar to 100 we find cle ar evidence of Furukawa's inertial scaling (l similar to t(2/3)), although the crossover from the viscous regime (l similar to t) is very broad. Thoug h it cannot be ruled out, we find no indication that Re is self-limiting (l similar to t(1/2)) as proposed by M. Grant and K.R. Elder [Phys. Rev. Lett . S2, 14 (1999)].