On the mechanism of forced-convection subcooled nucleate boiling

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.2910347· OSTI ID:5540860

Tsung-Chang, G; Bankoff, S G ^[1]

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1. Northwestern Univ. Evanston, IL (United States)

In highly subcooled nucleate boiling the bubbles grow and collapse while sliding along the heated surface, so that there is no net vapor transport away from the surface. A long-standing question exists as to whether conduction and convection between the bubbles, or latent heat transport through the bubbles, is the dominant heat transfer mechanism. It is shown here by simple calculations that the sliding of the bubble results in augmentation of microlayer evaporation under the bubble by a factor of two or more over a stationary bubble with a continuous microlayer. It appears therefore that the latent heat transport mechanism may be dominant at large bulk subcoolings.

• OSTI ID: 5540860
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 112:1; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOILING
CALCULATION METHODS
CONVECTION
ENERGY TRANSFER
EVAPORATION
FORCED CONVECTION
HEAT TRANSFER
MASS TRANSFER
NUCLEATE BOILING
PHASE TRANSFORMATIONS
SUBCOOLED BOILING
THERMAL CONDUCTION