Accession Number:

AD0259573

Title:

INVESTIGATING CAVITATION IN AN IMPELLER OF A CENTRIFUGAL PUMP

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-03-31

Pagination or Media Count:

1.0

Abstract:

Results obtained in studying cavitation phenomena in an impeller of a centrifugal pump are analyzed, and recommendations are given for improving the anticavitation properties of pumps. It was concluded that 1 the outer cavitational characteristics of a centrifugal pump cannot serve as a basis of determining the moment of origination of cavitation 2 cavitation in a centrifugal pump may originate at pressures at the intake of the pump, exceeding by much the pressure, at which there is a noticeable drop in delivery and efficiency of the pump and 3 a sharp drop in the delivery of a centrifugal pump takes place when cavitation envolopes the intake section of the intervane duct over the entire section. Cavitation in intervane ducts of a centrifugal pump impeller represents not an interrupted jet flow with specific separation boundary, but a flow with multitude of moving caverns and cavitational characteristics of centrifugal impellers can be improved considerably by enlarging in the planning projection the width of the initial section of the intervane duct. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE