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Mechanical Engineering, Chemical and Biological Engineering

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Conference Proceeding


ILASS-30th Annual Conference on Liquid Atomization and Spray Systems

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Conference Title

ILASS-30th Annual Conference on Liquid Atomization and Spray Systems

Conference Date

May 12-15, 2019


Tempe, AZ


Studying the near-field region of sprays is particularly challenging because it is optically dense. However, energy in the X-ray range is capable of penetrating this dense region and obtaining information that would otherwise be unavailable. Through time-resolved X-ray radiography, a better understanding of the near-field region is currently being developed. The 7-BM beamline at the Advanced Photon Source at Argonne National Lab was focused down to a 5 x 6 μm cross-sectional area. The attenuation in the beam, which is used to calculate the effective path length of liquid, was then collected at an effective rate of 270 kHz for 10 seconds. Various statistical measures were applied to the X-ray focused beam radiographs including average, standard deviation, skewness, and kurtosis, to quantify the spray from a canonical coaxial airblast nozzle. Results show that the average effective path length is useful in determining the intact length and spray angle. The capabilities of additional statistical measures in determining important spray characteristics are also discussed.


This proceeding is published as Bothell, J.K., Li, D., Morgan, T.B., Heindel, T.J., Machicoane, N., Aliseda, A., and Kastengren, A.L., “Statistical Analysis of Focused Beam Radiographs taken from a Coaxial Airblast Spray,” ILASS-30th Annual Conference on Liquid Atomization and Spray Systems, Tempe, AZ, May 12-15, 2019. Posted with permission.

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