Vibration response simulation of centrifuge excited by liquid medium based on SPH-FEM

Abstract

A coupled Smoothed Particle Hydrodynamics-Finite Element Method (SPH-FEM) framework is implemented to study flow-induced vibration problems of a decanter centrifuge drum under operational conditions. Excessive vibration has been measured on the centrifuge during operation at the rated speed, with the liquid medium contained within the rotating drum. The hydrodynamic excitation forces induced by the liquid medium are quantitatively characterized, along with the corresponding vibratory displacement amplitudes of the drum. The influence of vertical baffle numbers and horizontal baffle height on the vibration is studied. Finally, the optimized baffles configuration in the rotating drum is applied and achieves a good vibration suppression in industrial practice.