In this investigation, a method has been developed for determining the hydrodynamic mass of the impeller stage of the rotor which accounts for the three dimensional geometry of the impellers and the effects of the fluid velocity. By using this method, more accurate calculations of resonant frequencies of the rotor and hence the seal forces can be made. In comparison with previous approaches, two main features have been included: 1) an accurate representation of the shape of the impeller and the pump geometry; 2) the effects of the velocity of the fluid. The method is based on a linear perturbation technique which assumes that the disturbance in the pump's flow boundaries and velocities caused by motion of the rotor are small. A potential method is used to estimate the undisturbed flow field. Results have been obtained for a prototypical centrifugal nuclear-pump.
|Original language||English (US)|
|Pages (from-to)||var paging|
|Journal||Electric Power Research Institute (Report) EPRI NP|
|State||Published - Jan 1 1983|
ASJC Scopus subject areas
- Electrical and Electronic Engineering