Flow Analysis Through the Centrifugal Impeller of a Vacuum Cleaner Unit

Flow through the centrifugal impeller of a vacuum cleaner unit was investigated. This was done using experimental measurements and numerical simulations. Two different operational points were selected for the experiment. Experiments were performed using flow visualization with the use of the passive seeding particles. The rotational speed was reduced by using the theory of dynamical similarity where water was used as a flow medium instead of air. Numerical simulations were performed by using compressible and incompressible fluids. Flow through impeller channels is presented as particle trajectories and relative velocities for experimental approach and as flow streamlines and relative velocities for numerical approach.