Open AccessExperimental investigation of air–water, two-phase flow regimes in vertical mini pipe
Author(s) -
Pedram Hanafizadeh,
Mohammad Hassan Saidi,
Arash Nouri Gheimasi,
Soheil Ghanbarzadeh
Publication year - 2011
Publication title -
scientia iranica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.299
H-Index - 51
eISSN - 2345-3605
pISSN - 1026-3098
DOI - 10.1016/j.scient.2011.07.003
Subject(s) - air water , flow (mathematics) , two phase flow , mechanics , flow visualization , airflow , water flow , plug flow , pipe flow , materials science , nominal pipe size , geology , environmental science , hydrology (agriculture) , geotechnical engineering , thermodynamics , physics , composite material , turbulence
In this study, the flow patterns of air–water, two-phase flows have been investigated experimentally in a vertical mini pipe. The flow regimes were observed by a high speed video recorder in pipes with diameters of 2, 3 and 4 mm and length 27, 31 and 25 cm, respectively. The comprehensive visualization of air–water, two-phase flow in a vertical mini pipe has been performed to realize the physics of such a two-phase flow. Different flow patterns of air–water flow were observed simultaneously in the mini pipe at different values of air and water flow rates. Consequently, the flow pattern map was proposed for flow in the mini-pipe, in terms of superficial velocities of liquid and gas phases. The flow pattern maps are compared with those of other researchers in the existing literature, showing reasonable agreement