NDLI: Theoretical Study of Induction Pump for Molten Metal Using Rotating Twisted Magnetic Field

Content Provider	IEEE Xplore Digital Library
Author	Ueno, K. Ando, T.
Copyright Year	1965
Abstract	In this paper, the electromagnetic field in an induction pump for molten metal using rotating twisted magnetic field is theoretically analyzed. Asymptotic analysis for small magnetic Reynolds number clarifies that temporal mean value of the axial driving force f̅_z is almost uniform but rather small when the twist ratio ka₂ is considerably smaller than 1. On the other hand, when ka₂ is larger than 1, f̅_z near the outer boundary of the secondary conductor is large, whereas f̅_z around the central axis is very small. Such a nonuniform force is not suitable for driving fluids in the pump. Performance of the pump is estimated when the magnetic Reynolds number is always adjusted to a desired value by automatic control of frequency of power supply. The optimal value of the twist ratio ka₂ for the developed pressure is obtained. The ratio of the stator radius a₁ to the secondary-conductor radius a₂ has to be reduced to a value as small as possible in the hostile thermal environment by the molten metal. When the system is scaled up, the developed pressure is proportional to both a₂ and the axial length h of the stator. The estimation results give bases for designing the pump system and required specification of the power supply.
Sponsorship	IEEE Magnetics Society
Starting Page	1200
Ending Page	1211
Page Count	12
File Size	1448339
File Format	PDF
ISSN	00189464
Volume Number	48
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductors Metals Coils Windings Stators Force Power supplies magnetohydrodynamic conversion Electromagnetic analysis electromagnetic pump induction machines
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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