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US 6,852,178 B2Granted
Method for propagating vibratory motion into a conductive fluid and using the method to solidify a melted metal
AssigneeNagoya University
InventorsKazuhiko Iwai, Shigeo Asai
Life of this patent
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Abstract
A static magnetic field and a wave are applied to an electrically conductive fluid so as to satisfy the mathematical expression 2πf<(σ/ρ)B2, where f is the frequency (Hz) of the applied wave, σ is the electrical conductivity (S/m) of the conductive fluid, ρ is the density (kg/m3) of the conductive fluid, and B is the strength of the applied static magnetic field (T), to thereby generate and propagate vibratory motion into the conductive fluid.
Claims8
A method for propagating vibratory motion into a conductive fluid, comprising:
- preparing an electrically conductive fluid;
- and
- applying a static magnetic field and a wave to the conductive fluid the static magnetic field and the wave generation a transverse wave that propagates through the conductive fluid and thereby imparts to it an amount of vibratory motion, and the static magnetic field and the wave satisfying the expression
- 2πf<(σ/ρ)B2,
- where f is the frequency (Hz) of the applied wave, σ is the electrical conductivity (S/m) of the conductive fluid, ρ is the density (kg/m3) of the conductive fluid, and B is the strength of the applied static magnetic field (T).
2 more elements
A method for solidifying a melted metal, comprising:
- preparing a melted metal;
- and
- applying a static magnetic field and a wave to the melted metal, the static magnetic field and the wave generating a transverse wave that propagates through the melted metal and thereby imparts to it an amount of vibratory motion, and the static magnetic field and the wave satisfying the expression
- 2πf<(σ/ρ)B2,
- where f is the frequency (Hz) of the applied wave, σ is the electrical conductivity (S/m) of the conductive fluid, ρ is the density (kg/m3) of the conductive fluid, and B is the strength of the applied static magnetic field (T), to solidify the melted metal.
2 more elements
Dependencies are inferred from the claim text.