Experimental Study of Bubble Motion in Mercury With and Without a Magnetic Field

[+] Author and Article Information
Y. Mori, K. Hijikata, I. Kuriyama

Department of Physical Engineering, Tokyo Institute of Technology, Meguro, Tokyo, Japan

J. Heat Transfer 99(3), 404-410 (Aug 01, 1977) (7 pages) doi:10.1115/1.3450710 History: Received October 12, 1976; Online August 11, 2010


The behavior and hydrodynamical performance of a single bubble rising through mercury with and without magnetic field has been studied experimentally. A new method to measure the rise velocity and the shape of bubble with an electrical triple probe is proposed. When there is no magnetic field, a bubble changes its shape from spherical to elliptic and then to a spherical cap shape, as its equivalent radius Rm changes from 0.1 to 3 mm. The experimental results are found to agree well with the theories reported so far. In the case of a magnetic field, it is found that the effect of intensity of magnetic field B on the rise velocity depends largely on the radius of a bubble. When Rm = 3 mm, the rise velocity decreases monotonically with the increase of B. However, when Rm = 1 mm, the rise velocity increases once but it then starts to decrease afterwards with the increase of B.

Copyright © 1977 by ASME
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