The effects of the number and angle of microgrooves on the liquid film in horizontal annular two-phase flow

✍ Scribed by Timothy A. Shedd; Ty A. Newell; Pei Keow Lee

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 344 KB
• Volume: 46
• Category: Article
• ISSN: 0017-9310
• DOI: 10.1016/s0017-9310(03)00250-3

✦ Synopsis

Measurements of the liquid film profile and pressure drop were made in tubes with grooves of varying angle (0°, 9°a nd 18°) as well as tubes with varying numbers of grooves at a common angle (18°). These data indicate that the grooves act to redistribute the liquid film on the inner wall perimeter and that only a relatively small number of grooves ( 12) is needed to do this. The grooves also affect the stability of the vapor-liquid interface and can generate lower average liquid film thickness. The pressure loss is directly related to the number of grooves for the tubes studied.