kth_logo.gif

Article

A study of the dynamics of dual-particles settling close to a vertical wall

Authors: Prahl Wittberg, L., Revstedt, J., Fuchs, L.F.
Document Type: Conference
Pubstate: Published
Journal: 4th Int. Symposium on Turbulence and Shear Flow Phenomena, June 27-29, 2005, Williamsburg, Virginia, USA
Volume:   
Year: 2005

Abstract

Simulations of single and multiple spherical particles settling under gravity in the presence of a vertical wall are performed. In this study, the Reynolds number based on a characteristic velocity set to unity and the diameter of the sphere is varied in the range from 1 to 1000 and the density ratio in the range from 1.5 to 8. Interaction between particles as well as with the wall is investigated. The particles are modeled by using the Volume of Solid (VOS) approach, a method based on the Volume of Fluid (VOF) approach. The simulations showed that the motion of both single and dual spheres falling side by side is affected by the wall. Also, a dominant frequency for the oscillatory movements perpendicular to the wall was detected.