NDLI: Oil Aeration and Degassing Measurements for the Study of Aero-Engine Oil Pump Performance in Cavitation

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ippoliti, Laurent Vincké, Joëlle Hendrick, Patrick
Copyright Year	2017
Abstract	Cavitation combined with degassing strongly affect the pump performance in low-pressure operation. The understanding of oil aeration and degassing mechanisms is of great interest to explain and model the pump performance. This paper presents the techniques used for the measurement of the degassing and aeration phenomena applied to turbine lubrication oil. The measurement principle is to cause oil to degas and measure the flow density, which indicates the volume of degassed air and the oil aeration. The density was experimentally measured with two devices, one based on Coriolis forces and one on X-ray transmission. The paper describes and discusses the results obtained for various operating conditions and cases, such as constant aeration, degassing transient (pressure decrease) and aeration transient (pressure increase). The transient results fit exponential laws which give the asymptotical values and the time constant of the phenomenon. The comparison of the two techniques is also discussed.
Sponsorship	Fluids Engineering Division
File Format	PDF
ISBN	9780791858042
DOI	10.1115/FEDSM2017-69119
Volume Number	Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery
Conference Proceedings	ASME 2017 Fluids Engineering Division Summer Meeting
Language	English
Publisher Date	2017-07-30
Publisher Place	Waikoloa, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Pumps Coriolis force X-rays Aircraft engines Oil pumps Lubrication Cavitation Pressure Density Flow (dynamics) Turbines Transients (dynamics)
Content Type	Text
Resource Type	Article

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