Publication Date:
2019-07-18
Description:
Velocity fluctuations and particle concentrations are studied in a liquid fluidized bed to investigate the origin of steady state sedimentation. Both the velocity fluctuations and the particle concentrations are found to strongly depend on height. A flux balance model shows why the bed is stable: velocity fluctuations drive a downward particle flux that is compensated by an upward particle flux stemming from an excess flow velocity due to the stratification in concentration. Our results show that in steady state the magnitudes of the fluctuations are related to the degree of stratification.
Keywords:
Fluid Mechanics and Thermodynamics
Type:
Division of Fluid Dynamics 56th Annual Meeting; Sep 23, 2003 - Sep 25, 2003; Rutherford, NJ; United States
Format:
text