It is shown that a proposed analytical expression accurately fits simulation data of Hagen et al. (Physica A 272 (1999) 376) for the rotational velocity autocorrelation function of interacting Brownian particles. The fit is designed for intermediate and long times, but is also quite good at...

The long-time rotational motion of a set of rigid bodies immersed in a viscous fluid is studied on the basis of the linearized Navier–Stokes equations. After an initial twist applied to one of the bodies the rotational motion of each of them decays at long times with a t-5/2 long-time tail....

A liquid droplet immersed in a fluid subjected to a temperature gradient tends to move in the direction of higher temperature due to the temperature dependence of surface tension. In a suspension of many droplets the motion is determined by an interplay of hydrodynamic and thermal interactions....