Аннотация
In the present work, we study the rupture dynamics of a horizontal liquid film non-uniformly heated from below in a wide range of liquid viscosity. To visualize the liquid surface deformations and disruption of the film, we use a Nikon digital camera (shot at 60 fps) coupled with an optical schlieren system. In order to measure the instantaneous film thickness, we use the confocal Micro-Epsilon chromatic sensor. It was found that the process of film rupture can be divided into three stages: 1) film thinning down to a residual film on the heater; 2) existence of a stable residual film for some time; 3) rupture and dryout of the residual film. The thickness of the residual film was found to strongly depend on the liquid viscosity: For water, it is about 10 μm, whereas for PMS-200 it is about 275 μm.
Язык оригинала | английский |
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Номер статьи | 012057 |
Журнал | Journal of Physics: Conference Series |
Том | 1369 |
Номер выпуска | 1 |
DOI | |
Состояние | Опубликовано - 26 ноя 2019 |
Опубликовано для внешнего пользования | Да |
Событие | 5th International Workshop on Heat/Mass Transfer Advances for Energy Conservation and Pollution Control, IWHT 2019 - Novosibirsk, Российская Федерация Продолжительность: 13 авг 2019 → 16 авг 2019 |