Paper N–7: Photography and Analysis of Time Variation in Drop Size Distribution of a Liquid Spray

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: orig-research
Abstract: High-speed backlighted pictures of a finite area in the spray of two impinging water jets were taken to examine the effect of sample size on drop-size distribution by pseudo-continuous sampling and to analyze the nature of time variations occurring in a steady-state disintegration process. The optical system included a stroboscopic light source with spark discharge of less than 1-μsec duration and a 35mm drum camera of 5-ft circumference. Continuous sampling was simulated by essentially matching spray and film velocity (500 in./sec) in 1× photographs taken 500 times/sec. A film velocity of 3000 in./sec and light flashing rate of 10,000/sec were used to study time variations. An electronic particle analyzer with electron beam scanning and digital output was used for drop counting. A total of about 300 photographs containing nearly 35,000 drops were analyzed for these studies. Drop-size distributions were bimodal in nature and required an accumulation of at least 10,000 drops to develop fully. Random variation with major perturbation in all drop sizes occurred about 1000 times/sec or every 0.2 in. along the flow path.
Publication Date: 1962-01-01
DOI: 10.5594/J18190XY
Link: https://doi.org/10.5594/J18190XY
Author(s): Marcus F. Heidmann

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Marcus F. Heidmann; Paper N–7: Photography and Analysis of Time Variation in Drop Size Distribution of a Liquid Spray, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18190XY

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Marcus F. Heidmann; Paper N–7: Photography and Analysis of Time Variation in Drop Size Distribution of a Liquid Spray, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18190XY

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<span class="citation">Marcus F. Heidmann; <cite>Paper N–7: Photography and Analysis of Time Variation in Drop Size Distribution of a Liquid Spray</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J18190XY" target="_blank" rel="noopener">https://doi.org/10.5594/J18190XY</a></span>

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<li>
Marcus F. Heidmann; <cite id="bib-10-5594-j18190xy">Paper N–7: Photography and Analysis of Time Variation in Drop Size Distribution of a Liquid Spray</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
<span class="doi">10.5594/J18190XY</span>
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