Bulletin of JSME
Online ISSN : 1881-1426
Print ISSN : 0021-3764
Prediction Method of Flow Patterns in Subcooled and Low Quality Boiling Regions
Kotohiko SEKOGUCHIOsamu TANAKAShuji ESAKINoriaki KATSUKIMasao NAKASATOMI
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1981 Volume 24 Issue 191 Pages 834-841

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Abstract
A new parameter is proposed for prediction of the transition between flow patterns such as bubble, froth and annular flow, in both the subcooled and low quality regions of boiling flow. This parameter is derived from the theoretical calculation method of void fraction, which has been reported, on the assumption that the flow pattern transition occurs at a value of average void fraction over the cross section of the flow. A flow map is also presented which reasonably correlates the experimental results covering the following conditions ; pressure : 1∼98 ata, heat flux : 2×104∼5×106kcal/m2h, and mass velocity : 40∼5400kg/m2s.
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© The Japan Society of Mechanical Engineers
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