EXPERIMENTAL STUDY OF TWO-PHASE FLOW IN A HEMISPHERICAL ANNULAR GAP WITH BOILING ON ONE SIDE OF THE CHANNEL

Y. C. Liu, Y. C. Shih, F. B. Cheung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The phenomenon of nature convection boiling on the outer surface of a heated hemispherical vessel surrounded by a thermal insulation structure was investigated experimentally. The objectives were to observe the behavior of the boiling-induced two-phase motion in the annular gap between the vessel and the insulation structure and to determine the flow effect on the rate of boiling. High-speed photographic records revealed the presence of violent cyclic ejection of the vapor masses generated by boiling on the vessel outer surface which resulted in a buoyancy-driven, upward, concurrent two-phase flow through the channel. When boiling was taking place at high heat flux levels, the flow was found to be threedimensional with swirl formation. Measurements of the local boiling heat fluxes and the local wall superheats were made under steadystate boiling conditions covering the entire range of nucleate boiling with special emphasis on the high-heat-flux regime.

Original languageEnglish (US)
Title of host publicationHeat Transfer
Subtitle of host publicationVolume 1
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages177-184
Number of pages8
ISBN (Electronic)9780791818404
DOIs
StatePublished - 1997
EventASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Heat Transfer - Dallas, United States
Duration: Nov 16 1997Nov 21 1997

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume1997-S

Conference

ConferenceASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Heat Transfer
Country/TerritoryUnited States
CityDallas
Period11/16/9711/21/97

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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