Multiphase Science and Technology A Quarterly

ISSN for PRINT: 0276-1459

For Online Access

Best Paper Award Selection - Editorial Board Site

2007, Volume19

Issue 4

90 pages

DOI: 10.1615/MultScienTechn.v19.i4

Issue price - $193.00

Tomio Okawa
Dept. of Mechanical Engineering, Osaka University, Osaka, Japan

Takayuki Fujita
Dept. of Mechanical Engineering, Osaka University, Osaka, Japan

Jun Minamitani
Dept. of Mechanical Engineering, Osaka University, Osaka, Japan

Isao Kataoka
Dept. of Mechanical Engineering, Osaka University, Osaka, Japan

Measurement of the deposition rate of droplets in vertical upward annular flow was carried out using air and water as test fluids. The test section was a 5-mm-diameter circular tube, in which a small tube was placed concentrically to test the influence of the presence of a flow obstacle on the deposition rate of droplets. The local deposition rate of droplets was measured at the inlet and downstream of the obstacle section to investigate the mechanism of deposition augmentation caused by the flow obstacle. In contrast to the hypothesis used in available models for the obstacle effect, significant deposition augmentation was detected not only downstream, but also at the inlet of the obstacle section. Simple models for the local deposition rates of droplets around the flow obstacle were developed based on the present experimental results.

DOI: 10.1615/MultScienTechn.v19.i4.10 Download article, 305-321 pages

Article price - $45.00

  Next article >>