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Stability of rotating flows with radial heat transfer.

Author(s) : DYKHUIZEN R. C.

Type of article: Article

Summary

The investigation extends the classical stability analysis of rotating flows with the heat transfer to the geometry of a superconducting rotor. It is shown that the inherent stability of the solid body rotational flow field often limits the convective cooling when the coolant is contained inside the rotor. A stability threshold exists. At radial heat fluxes above this threshold, the no-flow solution becomes unstable. Experimental data are presented that clearly show an increase in the heat transfer coefficient as the stability threshold is reached. With a knowledge of this stability threshold, the designs of superconducting rotors for electrical motors and generators can be improved.

Details

  • Original title: Stability of rotating flows with radial heat transfer.
  • Record ID : 1996-2096
  • Languages: English
  • Source: Cryogenics - vol. 35 - n. 4
  • Publication date: 1995/04

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