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EXPERIMENTAL OBSERVATIONS OF FLOW BOILING OF LIQUID HELIUM I IN VERTICAL CHANNELS.

Author(s) : ZUST H. K., BALD W. B.

Type of article: Article

Summary

RESULTS ARE REPORTED OF THE FLOW STRUCTURE AND PRESSURE DROP OF HELIUM I FLOWING UPWARDS IN A VERTICAL HEATED CIRCULAR GLASS TUBE. THE EXPERIMENTS COVERED HEAT FLUXES FROM 4.5 TO 600 W PER M2, MASS FLUXES FROM 2 TO 12 KG PER M2 AND S AND PRESSURES BETWEEN 100 AND 120 KPA. FOR THE BUBBLE FLOW REGIME THE SHAPE, SIZE AND DRAG COEFFICIENT OF THE OBSERVED BUBBLES ARE REPORTED. SLIP VELOCITY, VOID FRACTION AND PRESSURE DROP MEASUREMENTS ARE COMPARED WITH GENERALLY ACCEPTED TWO-PHASE FLOW THEORIES. A VOID FRACTION CORRELATION FOR TWO-PHASE HELIUM FLOW IS PROPOSED.

Details

  • Original title: EXPERIMENTAL OBSERVATIONS OF FLOW BOILING OF LIQUID HELIUM I IN VERTICAL CHANNELS.
  • Record ID : 1982-1154
  • Languages: English
  • Source: Cryogenics - vol. 21 - n. 11
  • Publication date: 1981

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