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The structure of the Stewartson layers in a gas centrifuge. Part 1. Insulated end plates

Published online by Cambridge University Press:  12 April 2006

Takuya Matsuda
Affiliation:
Department of Aeronautical Engineering, Kyoto University, Kyoto, Japan Temporary address: Department of Applied Mathematics and Astronomy, University College, Cardiff, Wales.
Kiyoshi Hashimoto
Affiliation:
Department of Aeronautical Engineering, Kyoto University, Kyoto, Japan

Abstract

The structure of the Stewartson E¼-layer (E being the Ekman number) in a compressible gas contained in a rapidly rotating cylinder is investigated for the case in which the end plates of the cylinder are thermally insulated. It was found by Matsuda & Hashimoto (1976) that the E¼-layer could not have a relevant structure in the ordinary configuration in which the E¼-layer meets the end plates through its Ekman extension of thickness E½. In this paper the E¼ × E¼ square region, in addition to the Ekman extension, is considered. The heat generation due to the radial fluid motions in the Ekman extension causes the temperature fields in the E¼ × E¼ square region through which heat is conducted to the side wall of the cylinder. Numerical calculations were made to obtain the temperature fields, which are shown in several figures.

Type
Research Article
Copyright
© 1978 Cambridge University Press

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References

Hunter, C. 1967 The axisymmetric flow in a rotating annulus due to a horizontally applied temperature gradient. J. Fluid Mech. 27, 753778.Google Scholar
Matsuda, T. & Hashimoto, K. 1976 Thermally, mechanically or externally driven flows in a gas centrifuge with insulated horizontal end plates. J. Fluid Mech. 78, 337354.Google Scholar
Matsuda, T., Hashimoto, K. & Takeda, H. 1976 Thermally driven flow in a gas centrifuge with an insulated side wall. J. Fluid Mech. 73, 389399.Google Scholar
Matsuda, T., Sakurai, T. & Takeda, H. 1975 Source-sink flow in a gas centrifuge. J. Fluid Mech. 67, 197208.Google Scholar
Nakayama, W. & Usui, S. 1974 Flow in rotating cylinder of gas centrifuge. J. Nucl. Sci. Tech. 11, 242262.Google Scholar
Sakurai, T. & Matsuda, T. 1974 Gasdynamics of a centrifugal machine. J. Fluid Mech. 62, 727736.Google Scholar
Stewartson, K. 1957 On almost rigid rotations. J. Fluid Mech. 3, 1726.Google Scholar