Abstract
The results of the experimental investigation into regularities of interaction of solitary three-dimensional waves with regular two-dimensional waves on vertically falling liquid films are reported. The film falling down over the plate surface was formed using a slit dispenser with a controlled gap width. A vertically mounted optical glass plate was used as the working section. Two-dimensional waves with various frequencies were excited by harmonic modulation of the liquid flow rate at the input into the dispensing section of the working section. The solitary three-dimensional wave was excited by a short shot 10-20 ms long of the jet of the working liquid in the upper part of the film flow. To investigate the dynamics of interaction of the waves with a high spatial and temporal resolution, a high-speed system for diagnostics of the flow by laser-induced fluorescence (LIF) was used. At lower excitation energies, an increase in the amplitude of the three-dimensional wave was observed, while at higher excitation energies, a decrease in the amplitude towards its magnitude in the steady-state was observed.
Original language | English |
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Pages (from-to) | 614-617 |
Number of pages | 4 |
Journal | Doklady Physics |
Volume | 56 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2011 |
Externally published | Yes |
ASJC Scopus subject areas
- Computational Mechanics
- Mechanics of Materials
- Physics and Astronomy(all)