Sweep-out flow of film condensation on vertical plates with horizontal grooves

✍ Scribed by Takahiro Adachi; Satoshi Yoshida; Tetsuro Hamada

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 669 KB
• Volume: 38
• Category: Article
• ISSN: 1099-2871
• DOI: 10.1002/htj.20249

✦ Synopsis

Abstract

We have investigated fluid flow characteristics of film‐wise condensation on vertical plates with horizontal periodic grooves. Condensate stays at the edge of the grooves due to the surface tension. The condensate starts to flow, however, when the balance between the surface tension and the condensate's own weight is broken. It is found that the condensate flows downward successively and periodically from the top part of the plate as a group. In addition, we have obtained the relation between the frequencies of the periodic flow and the degree of sub‐cooling for two different pitches of the grooves. © 2009 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.20249