Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Atomization and Sprays
Impact-faktor: 1.262 5-jähriger Impact-Faktor: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684

Volumes:
Volumen 29, 2019 Volumen 28, 2018 Volumen 27, 2017 Volumen 26, 2016 Volumen 25, 2015 Volumen 24, 2014 Volumen 23, 2013 Volumen 22, 2012 Volumen 21, 2011 Volumen 20, 2010 Volumen 19, 2009 Volumen 18, 2008 Volumen 17, 2007 Volumen 16, 2006 Volumen 15, 2005 Volumen 14, 2004 Volumen 13, 2003 Volumen 12, 2002 Volumen 11, 2001 Volumen 10, 2000 Volumen 9, 1999 Volumen 8, 1998 Volumen 7, 1997 Volumen 6, 1996 Volumen 5, 1995 Volumen 4, 1994 Volumen 3, 1993 Volumen 2, 1992 Volumen 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.v5.i1.30
pages 45-73

SPRAY SIZING BY TOMOGRAPHIC IMAGING

C. Oberle
Department of Mechanical and Aerospace Engineering, State University of New York at Buffalo, Buffalo, New York 14260
Nasser Ashgriz
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada

ABSTRAKT

A technique for determining the local drop size distribution in liquid sprays is developed. This technique is based on the far-field measurement of the single-wavelength back-scattered light from the spray. A combination of a tomographic imaging technique and the Mie scattering theory is used. The tomographic reconstruction of the spray is realized by using several optical projections, which are obtained by recording the back-scattered light when the spray is illuminated with a coherent and collimated laser beam. Each of these projections corresponds to a specific angular orientation of the spray and a single back-scattering direction. Such an image represents the local time-averaged intensity across the spray for the light scattered in the selected direction. Three tomographic images of the same cross section, corresponding to three different back-scattering directions, are used to determine the local drop size distributions. A log-normal distribution function defined by two variables is assumed, and the scattered light intensity by this distribution is calculated from the Mie theory for the three back-scattering directions. A discrete search technique is then implemented to find the local log-normal distribution that best matches the results provided by the Mie theory and the tomographic images for all three directions. Simulations realized with an axisymmetric spray underline the accuracy of this new method.


Articles with similar content:

A THREE-DIMENSIONAL PIV USING INTENSITY GRADIENTS OF A TWO-COLOR LASER BEAM
Multiphase Science and Technology, Vol.19, 2007, issue 3
Akio Tomiyama, Shigeo Hosokawa
APPROXIMATE LEVEL-CROSSING PROBABILITIES FOR INTERACTIVE VISUALIZATION OF UNCERTAIN ISOCONTOURS
International Journal for Uncertainty Quantification, Vol.3, 2013, issue 2
Christoph Petz, Hans-Christian Hege, Kai Poethkow
MULTIDIMENSIONAL, NONHOMOGENEOUS, DENSE SPRAY CONTRIBUTIONS TO DIFFRACTION-BASED PARTICLE SIZE DISTRIBUTION MEASUREMENTS
Atomization and Sprays, Vol.5, 1995, issue 2
James E. Peters, Christine M. Woodall, Richard O. Buckius
MEASUREMENT OF THREE-DIMENSIONAL TEMPERATURE FIELDS BY HETERODYNE HOLOGRAPHIC INTERFEROMETRY
International Journal of Energetic Materials and Chemical Propulsion, Vol.3, 1994, issue 1-6
B. Ineichen, R. Muller
INVESTIGATION OF MULTIPHASE PARTICLE IMAGE VELOCIMETRY USING MONTE CARLO SIMULATIONS
Atomization and Sprays, Vol.14, 2004, issue 6
Steve Gorman, John F. Widmann