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Observation of pressure variation in the cavitation region of submerged journal bearingsVisual observations and pressure measurements in the cavitation zone of a submerged journal bearing are described. Tests are run at speeds of 1840 and 3000 rpm, and at each speed, four different levels of the ambient supply pressure are applied, ranging from 13.6 KPa to 54.4 KPa. A strong reverse flow is detected inside the cavitation area adjacent to its downstream end, and significant pressure variations on the order of 50 KPa are found inside the cavitation region at the downstream portion of its circumferential extent. Results indicate that the assumption of a constant cavitation pressure is incorrect in the case of enclosed cavitations, and it is postulated that oil which is saturated with air under atmospheric pressure becomes oversaturated in the subcavity pressure loop.
Document ID
19820034893
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Etsion, I.
(Technion - Israel Institute of Technology Haifa, Israel)
Ludwig, L. P.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Subject Category
Mechanical Engineering
Report/Patent Number
ASME PAPER 81-LUB-11
Meeting Information
Meeting: Joint Lubrication Conference
Location: New Orleans, LA
Start Date: October 5, 1981
End Date: October 7, 1981
Sponsors: American Society of Mechanical Engineers and American Society of Lubrication Engineers
Accession Number
82A18428
Distribution Limits
Public
Copyright
Other

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