Projects / Rotordynamics / Lateral vibrations


1) Multi-stage ring section centrifugal pump
2) Single-stage centrifugal pump - type OH2
3) Single-stage centrifugal pump - double suction



2)
Machine type:
Single-stage centrifugal pump – type OH2.

Application:
Pump in process industry.

Project extent:
Calculation of lateral natural frequencies, damping ratios and mode shapes.
Elaboration of Campbell diagram.
Calculation of rotor response caused by static and dynamic hydraulic radial forces, own weight of the rotor and rotor imbalance.
Calculation of radial reaction forces in bearings and seal rings.

Main goal:
Dimensioning of pump shaft, bearings and seal rings.

Gallery

Pump rotor model Applied radial forces at impeller location versus rotor speed Natural frequencies versus rotor speed Damping ratio versus rotor speed First three damped mode shapes Response amplitude versus axial location Radial reaction forces versus rotor speed