Prediction of boiling dryout heat flux for restricted annular crevice

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Abstract

The phenomenon of boiling crisis in a horizontal narrow annular geometry is analyzed by considering a buoyancy-driven two-phase flow in a vertical crevice. Conservation laws are formulated and solved analytically. A two-phase friction factor is determined using published experimental data. The effect of crevice axial length is also considered for a variety of working fluids. The predicting method based on the present work applies in wide ranges of annulus width and crevice length for a variety of fluids with a remarkable improvement in accuracy over the existing predicting methods.

Original languageEnglish
Pages (from-to)1993-1998
Number of pages6
JournalInternational Journal of Heat and Mass Transfer
Volume31
Issue number10
DOIs
StatePublished - Oct 1988

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