第13届国际传热学会年报
ISSN Online: 2377-424X
ISBN CD: 1-56700-226-9
ISBN Online: 1-56700-225-0
BUBBLE COALESCENCE IN POOL BOILING ON A THIN FOIL INVESTIGATED BY HIGH-SPEED IR THERMOGRAPHY
page 13
DOI: 10.1615/IHTC13.p28.400
摘要
Bubble coalescence events have been examined during pool nucleate boiling of water on thin, electrically-heated metal foils. Wall temperature measurements by high-speed IR camera synchronized with high-speed video camera recordings of the bubble motion have improved on the temporal and spatial resolution of previous observations by liquid crystal thermography. There was no evidence of long-range disturbances to the wall temperature beyond the immediate vicinity of the bubbles. Examples are given of the variations in wall temperature and heat flux during different types of coalescence.