An experimental study on liquid film dynamics and interfacial wave of air-water two-phase flow in a horizontal channel
2013 (English)In: 2013 21st International Conference on Nuclear Engineering, ICONE 2013: Volume 4: Thermal Hydraulics, ASME Press, 2013Conference paper (Refereed)
This study is concerned with liquid film dynamics and stability of annular flow, which plays an important role in understanding film rupture and dryout in boiling heat transfer. The research work starts from designing and making a test facility which enables the visualization and measurement of liquid film dynamics. A confocal optical sensor is applied to track the evolution of film thickness. A horizontal rectangular channel made of glass is used as the test section. Deionized water and air are supplied into that channel in such a way that an initial stratified flow forms, with the liquid film on the bottom wall. The present study is focused on characterization of liquid film profile and dynamics in term of interfacial wave and shear force induced film rupture under adiabatic condition. Based on the experimental data and analysis, it is found that given a constant water flowrate, the average thickness of water film decreases with increasing air flowrate, while the interfacial wave of the two-phase flow is intensified. As the air flowrate reaches a critical value, a localized rupture of the water film occurs.
Place, publisher, year, edition, pages
ASME Press, 2013.
Film dynamics, Film stability, Film thickness measurement, Liquid film
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-147289DOI: 10.1115/ICONE21-15952ISI: 000359512800067ScopusID: 2-s2.0-84901704064ISBN: 978-079185581-2OAI: oai:DiVA.org:kth-147289DiVA: diva2:730085
2013 21st International Conference on Nuclear Engineering, ICONE 2013; Chengdu; China; 29 July 2013 through 2 August 2013
QC 201406272014-06-272014-06-252015-09-09Bibliographically approved