Zusammenfassung
The history force is one of the hydrodynamic forces which act on a particle
moving through a fluid. It is an integral over the full time history of the
particle's motion and significantly complicates the equations of motion
(accordingly it is often neglected). We present here a study of the influence
of this force on particles moving in a turbulent flow, for a wide range of
particle parameters. It is shown that the magnitude of history force can be
significant and that it can have a considerable effect on the particles' slip
velocity, acceleration, preferential concentration and collision rate. We also
investigate the parameter dependence of the strength of these effects.
Nutzer