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TIME DEPENDENT HEAT TRANSFER IN PRESSURIZED SUPERFLUID HELIUM.

Author(s) : OKAMURA T.

Type of article: Article

Summary

EXPERIMENTAL AND THEORETICAL INVESTIGATIONS HAVE BEEN CARRIED OUT ON TIME DEPENDENT HEAT TRANSFER IN A PRESSURIZED HELIUM II CHANNEL, TERMINATED BY A COPPER ROD. HEAT FLUX IS APPLIED IN THE FORM OF A SINUSOIDAL WAVE. AS THE HEAT FLUX FREQUENCY INCREASES, COPPER AND HELIUM II TEMPERATURES CONVERGE WITH THE VALUES THAT ARE OBTAINED WHEN THE EFFECTIVE VALUE OF HEAT FLUX IS CONSTANTLY APPLIED. THE KAPITZA CONDUCTANCE IS INDEPENDENT OF THE HEAT FLUX FREQUENCY. A ONE-DIMENSIONAL HEAT TRANSFER MODEL HAS BEEN DEVELOPED, WHICH CAN ACCURATELY PREDICT THE EXPERIMENTALLY DETERMINED TIME DEPENDENT HEAT TRANSFER CHARACTERISTICS.

Details

  • Original title: TIME DEPENDENT HEAT TRANSFER IN PRESSURIZED SUPERFLUID HELIUM.
  • Record ID : 1990-1771
  • Languages: English
  • Source: Cryogenics - vol. 29 - n. 11
  • Publication date: 1989

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