| Issue |
EPJ Web Conf.
Volume 196, 2019
XV All-Russian School-Conference of Young Scientists with International Participation “Actual Problems of Thermal Physics and Physical Hydrodynamics”
|
|
|---|---|---|
| Article Number | 00015 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/epjconf/201919600015 | |
| Published online | 14 January 2019 | |
https://doi.org/10.1051/epjconf/201919600015
The effect of increasing gas shear on wave structure of thin liquid films
1 Kutateladze Institute of Thermophysics, 1 Lavrentiev ave., Novosibirsk 630090, Russia
2 Novosibirsk State University, 2 Pirogov str., Novosibirsk 630090, Russia
Published online: 14 January 2019
Evolution of thin liquid films sheared by co-current gas stream in a vertical 11.7 mm pipe is studied experimentally using BBLIF technique. The main goal is to investigate the transition of wave patterns due to increase in the gas stream velocity, VG, from 0 to 24 m/s. Apart from relatively weak quantitative changes in the characteristics of the primary waves, replacement of capillary precursor by slow secondary waves is found. The transition is indentified in the range of VG = 8 - 16 m/s for all liquid flow rates. It is observed that the appearing secondary waves may be the main reason of the decay of the capillary precursor. The experimental results are compared to prediction of evolutionary theoretical model, showing qualitative agreement on secondary waves generation, but with no agreement on precursor's disappearance. Introducing artificial perturbations mimicking the action of turbulent pulsations in the gas phase is recommended to improve the model.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.