Measurements of droplet size in shear-driven atomization using ultra-small angle x-ray scattering
Abstract
Measurements of droplet size in optically-thick, non-evaporating, shear-driven sprays have been made using ultra-small angle x-ray scattering (USAXS). The sprays are produced by orifice-type nozzles coupled to diesel injectors, with measurements conducted from 1 – 24 mm from the orifice, spanning from the optically-dense near-nozzle region to more dilute regions where optical diagnostics are feasible. The influence of nozzle diameter, liquid injection pressure, and ambient density were examined. The USAXS measurements reveal few if any nanoscale droplets, in conflict with a popular computational model of diesel spray breakup. The average droplet diameter rapidly decreases with downstream distance from the nozzle until a plateau value is reached, after which only small changes are seen in droplet diameter. This plateau droplet size is consistent with the droplets being small enough to be stable with respect to further breakup. As a result, liquid injection pressure and nozzle diameter have the biggest impact on droplet size, while ambient density has a smaller effect.
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. Politecnica de Valencia (Spain)
- Argonne National Lab. (ANL), Argonne, IL (United States); Michigan State Univ., East Lansing, MI (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- OSTI Identifier:
- 1373736
- Alternate Identifier(s):
- OSTI ID: 1416038
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- International Journal of Multiphase Flow
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: C; Journal ID: ISSN 0301-9322
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; diesel spray; droplet size; x-ray scattering
Citation Formats
Kastengren, A., Ilavsky, J., Viera, Juan Pablo, Payri, Raul, Duke, D. J., Swantek, A., Tilocco, F. Zak, Sovis, N., and Powell, C. F. Measurements of droplet size in shear-driven atomization using ultra-small angle x-ray scattering. United States: N. p., 2017.
Web. doi:10.1016/j.ijmultiphaseflow.2017.03.005.
Kastengren, A., Ilavsky, J., Viera, Juan Pablo, Payri, Raul, Duke, D. J., Swantek, A., Tilocco, F. Zak, Sovis, N., & Powell, C. F. Measurements of droplet size in shear-driven atomization using ultra-small angle x-ray scattering. United States. https://doi.org/10.1016/j.ijmultiphaseflow.2017.03.005
Kastengren, A., Ilavsky, J., Viera, Juan Pablo, Payri, Raul, Duke, D. J., Swantek, A., Tilocco, F. Zak, Sovis, N., and Powell, C. F. Thu .
"Measurements of droplet size in shear-driven atomization using ultra-small angle x-ray scattering". United States. https://doi.org/10.1016/j.ijmultiphaseflow.2017.03.005. https://www.osti.gov/servlets/purl/1373736.
@article{osti_1373736,
title = {Measurements of droplet size in shear-driven atomization using ultra-small angle x-ray scattering},
author = {Kastengren, A. and Ilavsky, J. and Viera, Juan Pablo and Payri, Raul and Duke, D. J. and Swantek, A. and Tilocco, F. Zak and Sovis, N. and Powell, C. F.},
abstractNote = {Measurements of droplet size in optically-thick, non-evaporating, shear-driven sprays have been made using ultra-small angle x-ray scattering (USAXS). The sprays are produced by orifice-type nozzles coupled to diesel injectors, with measurements conducted from 1 – 24 mm from the orifice, spanning from the optically-dense near-nozzle region to more dilute regions where optical diagnostics are feasible. The influence of nozzle diameter, liquid injection pressure, and ambient density were examined. The USAXS measurements reveal few if any nanoscale droplets, in conflict with a popular computational model of diesel spray breakup. The average droplet diameter rapidly decreases with downstream distance from the nozzle until a plateau value is reached, after which only small changes are seen in droplet diameter. This plateau droplet size is consistent with the droplets being small enough to be stable with respect to further breakup. As a result, liquid injection pressure and nozzle diameter have the biggest impact on droplet size, while ambient density has a smaller effect.},
doi = {10.1016/j.ijmultiphaseflow.2017.03.005},
journal = {International Journal of Multiphase Flow},
number = C,
volume = 92,
place = {United States},
year = {Thu Mar 16 00:00:00 EDT 2017},
month = {Thu Mar 16 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
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