| Issue |
MATEC Web Conf.
Volume 84, 2016
International Symposium and School of Young Scientists “Interfacial Phenomena and Heat Transfer” (IPHT 2016)
|
|
|---|---|---|
| Article Number | 00001 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/matecconf/20168400001 | |
| Published online | 16 November 2016 | |
Three-dimensional investigation of liquid film structure at the initial area of annular-dispersed flow
1 Kutateladze Institute of Thermophysics SB RAS, Lavrentiev ave., 1, Novosibirsk, 630090, Russia
2 Novosibirsk State University, Pirogov str., 2, Novosibirsk, 630090, Russia
Initial stage of downward flow of gas-sheared liquid film in a vertical rectangular duct was studied using brightness-based laser-induced fluorescence technique. Measurements were resolved along both longitudinal and transverse coordinates and time. The initial high-frequency waves which are formed at the inlet were found to be two-dimensional. These waves are promptly broken into localised horseshoe-shaped waves which merge downstream to form large-scale quasi-2D disturbance waves. Peculiarities of three-dimensional evolution of waves of different types were studied in a wide range of flow parameters.
© The Authors, published by EDP Sciences, 2016
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