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The thermohydraulic characteristics of two-phase flow in extremely narrow channels (the frictional pressure drop and heat transfer of boiling two-phase flow, analytical model).

Author(s) : MORIYAMA K., INOUE A., OHIRA H.

Type of article: Article

Summary

Flow pattern, pressure drop, and heat transfer were investigated for R113 boiling two-phase flow in extremely narrow channels with a thickness of 35-110 micrometers between horizontal parallel plates. It was clarified from the experiments that the friction multiplier of two-phase flow is well estimated by an empirical correlation proposed for adiabatic systems, and that the heat-transfer coefficient of two-phase flow is 3-20 times as large as that of the liquid single-phase flow. An analytical model based on viscous flow and the effect of the capillary number on the thickness of the liquid film is proposed.

Details

  • Original title: The thermohydraulic characteristics of two-phase flow in extremely narrow channels (the frictional pressure drop and heat transfer of boiling two-phase flow, analytical model).
  • Record ID : 1994-2841
  • Languages: English
  • Source: Heat Transf., Jap. Res. - vol. 21 - n. 8
  • Publication date: 1992

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