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Flow response of magnetic fluid surface by pitching motion

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Abstract

This research analyses the dynamic behavior of magnetic fluid that sloshes due to the pitching motion of the container. To analyze the behavior of magnetic fluid, we first analyze the equations that govern magnetic fluid as well as the momentum equation of the sloshing that results from a magnetic field. In each case, we conducted simulation and compared the results from simulation with those from experiments. When sloshing does not occur, the surface of the magnetic fluid rises towards the location of intensity of the magnetic field; in the absence of an additional, external body force, the fluid remains elevated. In case sloshing occurs simultaneously with the application of the magnetic field, the elevation of the surface as a result of the magnetic field is maintained. Further, we can confirm that if the excitation frequency of sloshing is small, the wave motion of the surface is small because the magnetic body force dominates the effect of sloshing. Even if the excitation frequency increases, the wave motion of the fluid surface is smaller than when a magnetic field is not applied. The fluid surface rises in that location where the intensity of the magnetic field is strong. Where the intensity of the magnetic field is weak, the height of the fluid surface is lower than the initial level that obtains in the absence of a magnetic field. Through the study, we can conclude that the sloshing behavior of magnetic fluid is influenced by the magnetic field intensity and distribution.

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Authors and Affiliations

  1. School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Korea

    Hyung-Sub Bae, Young-Won Yun & Myeong-Kwan Park

Authors
  1. Hyung-Sub Bae
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  2. Young-Won Yun
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  3. Myeong-Kwan Park
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Corresponding author

Correspondence to Myeong-Kwan Park.

Additional information

This paper was recommended for publication in revised form by Associate Editor Gihun Son

Hyung-Sub Bae received the M.S. degrees in Mechanical Engineering from Pusan National University, Korea, in 2004. His research interests are in hydraulic and smart fluid control such as magnetic fluid and MR fluid.

Young-Won Yun was born in Busan, Korea, in 1973. He received his B.S. in Mechanical Engineering from Donga University, Busan, Korea, in 2000. He also received his M.S. in Mechanical Engineering from Pusan National University, Busan, Korea, in 2003. He is currently working toward his Ph. D at Pusan National University. His current research interests are Electro-hydraulic systems and a robust controller.

Myeong-Kwan Park received the M.S. and Ph.D. degrees from Tokyo Institute of Technology, Tokyo, Japan, in 1988 and 1991, respectively, in mechanical engineering. From 1991 to 1992, he served as a Research Associate in Department Mechanical Engineering, Tokyo Institute of Technology. He is currently a full professor with Department of Mechanical Engineering and a Researcher in the Research Institute of Mechanical Technology at Pusan National University. His research interests are in hydraulic and smart fluid such as magnetic fluid, ER fluid and MR fluid.

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Bae, HS., Yun, YW. & Park, MK. Flow response of magnetic fluid surface by pitching motion. J Mech Sci Technol 24, 583–592 (2010). https://doi.org/10.1007/s12206-010-0109-x

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  • DOI: https://doi.org/10.1007/s12206-010-0109-x

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