Feedback mechanism for smart nozzles and nebulizers
Abstract
Nozzles and nebulizers able to produce aerosol with optimum and reproducible quality based on feedback information obtained using laser imaging techniques. Two laser-based imaging techniques based on particle image velocimetry (PTV) and optical patternation map and contrast size and velocity distributions for indirect and direct pneumatic nebulizations in plasma spectrometry. Two pulses from thin laser sheet with known time difference illuminate droplets flow field. Charge coupled device (CCL)) captures scattering of laser light from droplets, providing two instantaneous particle images. Pointwise cross-correlation of corresponding images yields two-dimensional velocity map of aerosol velocity field. For droplet size distribution studies, solution is doped with fluorescent dye and both laser induced florescence (LIF) and Mie scattering images are captured simultaneously by two CCDs with the same field of view. Ratio of LIF/Mie images provides relative droplet size information, then scaled by point calibration method via phase Doppler particle analyzer.
- Inventors:
-
- Potomac, MD
- Arlington, VA
- Kleinburg, CA
- Issue Date:
- Research Org.:
- George Washington Univ., Washington, DC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 985849
- Patent Number(s):
- 7483767
- Application Number:
- 11/247,596
- Assignee:
- The George Washington University (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05B - SPRAYING APPARATUS
G - PHYSICS G01 - MEASURING G01P - MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK
- DOE Contract Number:
- FG02-93ER14320
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Montaser, Akbar, Jorabchi, Kaveh, and Kahen, Kaveh. Feedback mechanism for smart nozzles and nebulizers. United States: N. p., 2009.
Web.
Montaser, Akbar, Jorabchi, Kaveh, & Kahen, Kaveh. Feedback mechanism for smart nozzles and nebulizers. United States.
Montaser, Akbar, Jorabchi, Kaveh, and Kahen, Kaveh. Tue .
"Feedback mechanism for smart nozzles and nebulizers". United States. https://www.osti.gov/servlets/purl/985849.
@article{osti_985849,
title = {Feedback mechanism for smart nozzles and nebulizers},
author = {Montaser, Akbar and Jorabchi, Kaveh and Kahen, Kaveh},
abstractNote = {Nozzles and nebulizers able to produce aerosol with optimum and reproducible quality based on feedback information obtained using laser imaging techniques. Two laser-based imaging techniques based on particle image velocimetry (PTV) and optical patternation map and contrast size and velocity distributions for indirect and direct pneumatic nebulizations in plasma spectrometry. Two pulses from thin laser sheet with known time difference illuminate droplets flow field. Charge coupled device (CCL)) captures scattering of laser light from droplets, providing two instantaneous particle images. Pointwise cross-correlation of corresponding images yields two-dimensional velocity map of aerosol velocity field. For droplet size distribution studies, solution is doped with fluorescent dye and both laser induced florescence (LIF) and Mie scattering images are captured simultaneously by two CCDs with the same field of view. Ratio of LIF/Mie images provides relative droplet size information, then scaled by point calibration method via phase Doppler particle analyzer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 27 00:00:00 EST 2009},
month = {Tue Jan 27 00:00:00 EST 2009}
}
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