Rotordynaqmic Forces from DischargetoSuction Leakage Flows in Centrifugal Pumps: Effects of Geometry
CaltechAUTHORS
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Title 
Rotordynaqmic Forces from DischargetoSuction Leakage Flows in Centrifugal Pumps: Effects of Geometry


Creator 
Uy, Robert V.
Bircumshaw, Brian L. Brennen, Christopher E. 

Subject 
Caltech Library Services


Description 
The rotordynamic forces generated by the fluid flow through the impeller leakage path of a centrifugal pump are now well established. The present paper examines the effects of modifying the leakage path geometry by changing the front shroud, from a conical shape to a more typical curved design, and the effects of low pressure seal design on these forces. It is found that only the crosscoupled stiffness is affected by the change of path geometry. Changing the low pressure seal from an axial to a radial clearance does, however, significantly affect the rotordynamic forces. A bulk flow numerical model is found to predict the same general result for the low pressure seal tests. The model agrees with the general trends with increasing leakage flow coefficient exhibited by the data, but appears to underpredict the magnitude of the normal force.


Date 
19970713


Type 
Conference or Workshop Item
PeerReviewed 

Format 
application/pdf


Identifier 
http://authors.library.caltech.edu/156/1/UYR171.pdf
Uy, Robert V. and Bircumshaw, Brian L. and Brennen, Christopher E. (1997) Rotordynaqmic Forces from DischargetoSuction Leakage Flows in Centrifugal Pumps: Effects of Geometry. In: International Conference on Fluid Engineering, 1316 July 1997, Tokyo, Japan. http://resolver.caltech.edu/CaltechAUTHORS:UYRicfe97 <http://resolver.caltech.edu/CaltechAUTHORS:UYRicfe97> 

Relation 
http://resolver.caltech.edu/CaltechAUTHORS:UYRicfe97
http://authors.library.caltech.edu/156/ 
