NDLI: Similarity Law of Air-Water Two-Phase Flow Performance of Centrifugal Pump

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Matsushita, Naoki Watanabe, Satoshi Okuma, Kusuo Hasui, Tomomichi Furukawa, Akinori
Copyright Year	2007
Abstract	Air-water two-phase flow performance of conventional centrifugal pumps causes the impermissible head deterioration even at an inlet void fraction less than about 10%. A tandem arrangement of double rotating cascades and higher blade outlet angle more than 90° only in outer rotating cascade has been proposed as a centrifugal pump impeller with high performance in air-water two-phase flow condition. To obtain further improvement of pump performances, a diffuser cascade is installed downstream of impeller outlet. In design of air-water two-phase flow centrifugal pump in various size and operating conditions as well as in single-phase flow, similarity law of pump performances is very useful. The similarity law of impeller diameter, blade height and rotational speed is investigated for the proposed impeller in the present paper. As the results, the similarity law of impeller diameter and rotational speed is certified experimentally even in two-phase flow condition. In addition, influences of blade height on air-water two-phase flow performances indicate a little difference from the similarity law. This difference is, then, discussed by using the results of static head on the shroud wall and air behaviors in the impellers.
Sponsorship	Fluids Engineering Division
Starting Page	915
Ending Page	920
Page Count	6
File Format	PDF
ISBN	0791842894
DOI	10.1115/FEDSM2007-37469
e-ISBN	0791838056
Volume Number	Volume 2: Fora, Parts A and B
Conference Proceedings	ASME/JSME 2007 5th Joint Fluids Engineering Conference
Language	English
Publisher Date	2007-07-30
Publisher Place	San Diego, California, USA
Access Restriction	Subscribed
Subject Keyword	Centrifugal pump Air-water two-phase flow Similarity law Pump performance Water Centrifugal pumps Pumps Two-phase flow
Content Type	Text
Resource Type	Article

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