It was found out that some of the parts have aged and that one of the impellers
was not working out of the 32 impellers
Zhu, "Direct and inverse iterative design method for centrifugal pump impellers
," Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol.
are frequently found in leaf blowers that make rustling leaves a bit more palatable.
The relative movement between rotating impellers
and stationary guide vanes , as well as the trailing edge vortex shedding , results into highly irregular pressure pulsation.
To analyze the effect of impeller
diameter on the performance of high-speed rescue pumps, simulations were performed using four impellers
Although wastewater treatment has improved, the amount of oxygen in wastewater, together with chemical treatment of wastewater generally, leads to a higher degree of corrosion of volutes, pump impellers
Once the accuracy of the model was confirmed it was then possible to introduce design improvements to the impellers
, the labyrinth seals, the inter-coolers, the bearings and the shaft itself.
In addition, we conducted steady-state thermal testing to measure the convective thermal resistance (average heat transfer coefficient) of the rotating impellers
. Finally, we showed that the performance trends at the free delivery flow rate can be captured with a relatively simple CFD model.
Rockland, MA, August 12, 2014 --(PR.com)-- Globe Marine is pleased to introduce another new marine impeller
model added to its line of world-class Globe Run-Dry[R] Impellers
-- the only flexible impeller
in the world that is able to run-dry for up to 15 minutes.
In order to determine the pure bending stress in the shaft due only to unbalanced hydraulic forces acting on the mixing impellers
(ignoring tensional stress) it was a matter of determining the magnitude of these hydraulic forces and where along the shaft they were acting (impeller
Nienow, "Mixing in large-scale vessels stirred with multiple radial or radial and axial up-pumping impellers
," Chemical Engineering Science, vol.