Sedimentation of dilute fine-grained suspension in intermediate region

0395885 - ÚH 2014 RIV CZ eng J - Journal Article
Vlasák, Pavel - Chára, Zdeněk
Sedimentation of dilute fine-grained suspension in intermediate region.
Acta Technica CSAV. Roč. 58, č. 2 (2013), s. 109-117. ISSN 0001-7043
R&D Projects: GA ČR GAP105/10/1574
Institutional research plan: CEZ:AV0Z20600510
Institutional support: RVO:67985874
Keywords : Concentration * Intermediate region * Particle size * Sedimentation * Vessel inclination
Subject RIV: BK - Fluid Dynamics

The results of experimental investigation of the continuous sedimentation of dilute model of fine-grained suspension in the intermediate region of settlement are analyzed. The effect of the particle size (glass beads of average diameter 150-850μm, concentration and inclination of the vessel axis on particle fall velocity is evaluated. It is confirmed that the local relative particle-liquid velocity has a practically constant value across the vessel cross-section. The settling pattern is strongly affected even by a very gentle slope of the vessel axis, which causes an asymmetrical absolute velocity profile and significant increase of the local concentration and absolute fall velocity of particles near the upward-facing wall of the vessel.
Permanent Link: http://hdl.handle.net/11104/0231139