A high speed film of boiling outside tubes near the top of a horizontal reboiler tube bundle reveals a multitude of small bubbles which grow rapidly while sliding up the side of the tube. These bubbles originate from both the main stream and from nucleation sites at the base of the tube. The measured growth rate correlates well with theory based on an evaporating microlayer under the bubble. It is shown that sliding bubbles can account for the enhancement of heat transfer observed at the upper tubes of bundles. © 1982.
|Number of pages||8|
|Journal||International Journal of Heat and Mass Transfer|
|Publication status||Published - May 1982|