Abstract
Measurement of the local rise velocity of large liquid drops of 3-7 mm in diameter and the local axial wave propagation velocity on a liquid jet surface in liquid-liquid systems were successfully performed using a Laser Grating Velocimeter (LGV). The primary frequency of the photodetector signal that is required for evaluation of the local velocity, was determined unambiguously by a frequency-domain Fast Fourier Transform analysis of the velocity signal. The validity of this technique, which eliminates potential measurement errors, was confirmed by a controlled experiment. The LGV was applied to the determination of the drop terminal rise, velocity distribution of a population of 300 drops, and axial distribution of the jet surface wave velocity in order to demonstrate the capability and effectiveness of the technique.
Original language | English |
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Pages (from-to) | 5111-5123 |
Number of pages | 13 |
Journal | Chemical Engineering Science |
Volume | 51 |
Issue number | 23 |
DOIs | |
State | Published - Dec 1996 |
Externally published | Yes |
Keywords
- Drop motion
- jets
- laser-Doppler anemometry
- liquid-liquid
- terminal velocity