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Investigation of a Steady Magnetohydrodynamic Shear Layer using Hot-film Anemometry

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Abstract

THEORETICAL studies of magnetohydrodynamic (MHD) flows in ducts and around bodies of revolution have predicted the occurrence of intense shear layers in these systems. This study is a detailed investigation of velocity profiles in such a shear layer. A miniature, quartz-insulated, cylindrical, hot-film sensor (0.03 mm in diameter and sensitive length of 0.50 mm, supplied by Thermo-Systems Inc., St Paul, Minnesota) is used in the constant-temperature mode in mercury; this device shows much promise as a velocity indicator in electrically conducting media. I have already discussed the application of hot-film anemometry to low speed mercury flows (0–15 cm/s)1,2, and higher speed applications have been discussed by Hoff3.

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References

  1. Malcolm, D. G., J. Fluid Mech., 37, 701 (1969).

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  2. Malcolm, D. G., DISA Information (in the press).

  3. Hoff, M., Instruments and Control Systems, 42, 3, 83 (1969).

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  4. Hunt, J. C. R., and Malcolm, D. G., J. Fluid Mech., 33, 775 (1968).

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  5. Hunt, J. C. R., and Stewartson, K., J. Fluid Mech., 38, 225 (1969).

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Canada

    D. G. MALCOLM

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  1. D. G. MALCOLM
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MALCOLM, D. Investigation of a Steady Magnetohydrodynamic Shear Layer using Hot-film Anemometry. Nature 224, 909–910 (1969). https://doi.org/10.1038/224909a0

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  • DOI: https://doi.org/10.1038/224909a0

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