Open AccessBubble dynamics during flow boiling in a flat 0.6 mm high channel
Author(s) -
V V Belosludtsev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012083
Subject(s) - subcooling , bubble , boiling , flow boiling , microchannel , nucleate boiling , mechanics , materials science , heat transfer , hydraulic diameter , flow (mathematics) , flow visualization , thermodynamics , heat transfer coefficient , physics , reynolds number , turbulence
The vapour bubble dynamics during subcooled flow boiling in a flat microchannel with the height of 0.6 mm was investigated using high-speed visualization. Nucleate flow boiling was maintained by localized heat source. The data on the bubble dynamics was compared with well-known classic growth correlation formulas. The obtained data have shown that the bubble size can reach the channel height in about 0.1 ms, which can lead to heat transfer crisis in channels with local heating.