Abo Bibliothek: Guest

ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

EVAPORATION OF A DROPLET OF ONE LIQUID RISING THROUGH A SECOND IMMISCIBLE LIQUID. A NEW THEORY OF THE HEAT TRANSFER PROCESS

Get access (open in a dialog) DOI: 10.1615/IHTC5.910
pages 59-63

Abstrakt

For a butane droplet/bubble evaporating in brine, the bubble velocity is constant when interfacial tension is important, but increases as the square root of the equivalent diameter when interfacial tension is less important. Sloshing of residual liquid butane round the top internal surface of the bubble is thought to be related to be related to bubble strouhal frequency, implying that bubble oscillation is determined by vortex shedding into the wake. The evaporation rate, also related to bubble motion, is mainly determined by the thermal resistance of the sloshing liquid butane film, which gives a heat transfer coefficient varying as diameter ratio to the power of 1/6.