Non-contact Generation of Compression Waves in a Liquid Metal by Imposing a High Frequency Electromagnetic Field

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In order to confirm the fact that compression waves can be generated in an electrically conductive liquid by using an electromagnetic field. Pressure oscillations in a liquid gallium were directly measured under the imposition of a high frequency magnetic field and a mathematical model based on the electromagnetic field theory and the compressible fluid dynamics has been developed. The pressure oscillation with the double frequency of the imposed magnetic field was not only isotropic but also in proportion to the square of the intensity of the magnetic field. These observations coincide with the prediction derived from the mathematical model. Furthermore, the measured distribution of the pressure oscillation in a liquid gallium agrees well with the result of the mathematical model.

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  • ISIJ international  

    ISIJ international 37(10), 962-966, 1997-10-15 

    The Iron and Steel Institute of Japan

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