NDLI: A magnetic fluid seal for rotary blood pumps: Image and computational analyses of behaviors of magnetic fluids

Content Provider	IEEE Xplore Digital Library
Author	Mitamura, Y. Yano, T. Okamoto, E.
Copyright Year	2013
Description	Author affiliation: Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan (Mitamura, Y.) \|\| Dept. of Machine Intell. & Syst. Eng., Akita Prefectural Univ., Yuri-Honjo, Japan (Yano, T.) \|\| Dept. of Human Sci. & Inf., Tokai Univ., Sapporo, Japan (Okamoto, E.)
Abstract	A magnetic fluid (MF) seal has excellent durability. The performance of an MF seal, however, has been reported to decrease in liquids (several days). We have developed an MF seal that has a shield mechanism. The seal was perfect for 275 days in water. To investigate the effect of a shield, behaviors of MFs in a seal in water were studied both experimentally and computationally. (a) Two kinds of MF seals, one with a shield and one without a shield, were installed in a centrifugal pump. Behaviors of MFs in the seals in water were observed with a video camera and high-speed microscope. In the seal without a shield, the surface of the water in the seal waved and the turbulent flow affected behaviors of the MFs. In contrast, MFs rotated stably in the seal with a shield in water even at high rotational speeds. (b) Computational fluid dynamics analysis revealed that a stationary secondary flow pattern in the seal and small velocity difference between magnetic fluid and water at the interface. These MF behaviors prolonged the life of an MF seal in water.
Starting Page	663
Ending Page	666
File Size	948349
Page Count	4
File Format	PDF
ISBN	9781457702167
ISSN	1557170X
DOI	10.1109/EMBC.2013.6609587
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-03
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic liquids Seals Pumps Shafts Blood Computational fluid dynamics
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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