Abstract
In our experiments a magnetic fluid is enclosed in a hollow-cylindrical container heated from the center and cooled at the outer surface. It is under the influence of an azimuthal magnetic field with radial gradient. The flow profile has been investigated by small thermistors placed at the inner surface of the outer wall of the container. The experiments were carried out with sounding rockets and at the drop tower “Bremen” (ZARM, University of Bremen). The flow profile of the convective flow, and the critical magnetic Rayleigh number obtained in these experiments agree well with theoretical predictions.
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