NDLI: Reduction of Cavitation Damage in a High-Energy Water Injection Pump

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Cooper, Paul Ungewitter, Ron Farooqi, Rehan Mckenzie, James Schiavello, Bruno Robinson, Wayne
Copyright Year	2011
Abstract	The conventionally-designed first-stage impeller of a high-energy, two-stage 19MW seawater injection pump, running at 4950 rpm and generating 1500m of head at a flow rate of 1.05 m3/s was seriously damaged by cavitation erosion in the first two months of operation. The impeller was redesigned by reshaping the blades in the region near the leading edges so as to reduce the inception cavitation number. This impeller has been running for more than a year, and the cavitation erosion rate is predicted to be low enough for it to last 40,000 hours. However, a prominent tone at blade passing frequency appeared with the new impeller, which interacts more effectively with the distorted inflow from the side-suction approach passage. Acoustic analysis of both single- and two-phase unsteady RANS CFD solutions corroborate the presence of this tone, which had not been observed when the pump operated with the original, conventional impeller.
Sponsorship	Fluids Engineering Division
Starting Page	515
Ending Page	529
Page Count	15
File Format	PDF
ISBN	9780791844403
DOI	10.1115/AJK2011-06092
Volume Number	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
Conference Proceedings	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
Language	English
Publisher Date	2011-07-24
Publisher Place	Hamamatsu, Japan
Access Restriction	Subscribed
Subject Keyword	Suction Blades Computational fluid dynamics Cavitation erosion Acoustics Cavitation Flow (dynamics) Pumps Reynolds-averaged navier–stokes equations Impellers Damage Underground injection Inflow Seawater
Content Type	Text
Resource Type	Article

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