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Atomization and Sprays
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ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v9.i2.50
pages 193-213

AN EXPERIMENT ON FLOW DISTRIBUTION AND MIXING IN IMPINGING JET SPRAYS

C. H. Lee
Engine Research Center, University of Wisconsin—Madison, Madison, Wisconsin, USA
Y. H. Jung
Department of Mechanical Engineering, Seoul National University, Seoul, Korea
Suk Ho Chung
Clean Combustion Research Center King Abdullah University of Science and Technology Thuwal, Saudi Arabia

RÉSUMÉ

Injecting water and sodium carbonate (Na2CO3) solution simulates the mixing process in impinging jet sprays of liquid oxidizer and liquid fuel for both symmetric and asymmetric cases. Liquid sheets are visualized, and the mixing behaviors of two streams are measured by collecting droplets using sampling cells. The mixing characteristics between the two liquids are investigated by the acid-base titration technique.
For nearly symmetric impinging jets, stable liquid sheets are formed and the two liquid jets are well mixed. Similarity inflow rate distribution at various measuring heights is maintained. For asymmetric impinging jets, liquid sheets become unstable as the difference in jet velocity increases. In some extreme cases, liquid sheets are not formed and the jets are separated. Dimensionless variables are adopted, demonstrating similarity inflow and mixing distribution. Model predictions agree reasonably with experimental results.


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