scholarly journals Planar Laser Rayleigh Scattering for Analyzing Diesel Spray Characteristics

2008 ◽  
Vol 43 (2) ◽  
pp. 273-278
Author(s):  
Taku TSUJIMURA ◽  
Takuro MITA ◽  
Zhili CHEN ◽  
Shinichi GOTO
2009 ◽  
Vol 47 (3) ◽  
pp. 439-449 ◽  
Author(s):  
Anne Adam ◽  
Philippe Leick ◽  
Gerd Bittlinger ◽  
Christof Schulz

2011 ◽  
Author(s):  
Azwan Sapit ◽  
Sho Nagayasu ◽  
Yasunori Tsuboi ◽  
Yuzuru Nada ◽  
Yoshiyuki Kidoguchi

Volume 4 ◽  
2004 ◽  
Author(s):  
Sean P. Kearney ◽  
Thomas W. Grasser ◽  
Steven J. Beresh

Filtered Rayleigh Scattering (FRS) is demonstrated in a premixed, sooting ethylene-air flame. In sooting flames, traditional laser-based temperature-imaging techniques such linear (unfiltered) Rayleigh scatting (LRS) and planar laser-induced fluorescence (PLIF) are rendered intractable due to intense elastic scattering interferences from in-flame soot. FRS partially overcomes this limitation by utilizing a molecular iodine filter in conjunction with an injection-seeded Nd:YAG laser, where the seeded laser output is tuned to line center of a strong iodine absorption transition. A significant portion of the Doppler-broadened molecular Rayleigh signal is then passed while intense soot scattering at the laser line is strongly absorbed. In this paper, we demonstrate the feasibility of FRS for sooting flame thermometry using a premixed, ethylene-air flat flame. We present filtered and unfiltered laser light-scattering images, FRS temperature data, and laser-induced incandescence (LII) measurements of soot volume fraction for fuel-air equivalence ratios of φ = 2.19 and 2.24. FRS-measured product temperatures for these flames are nominally 1500 K. The FRS temperature and image data are discussed in the context of the soot LII results and a preliminary estimate of the upper sooting limit for our FRS system of order 0.1 ppm volume fraction is obtained.


2015 ◽  
Vol 2015 (0) ◽  
pp. _G0700504--_G0700504-
Author(s):  
Yuki MORIMOTO ◽  
Hironobu UEKI ◽  
Noritsune KAWAHARADA ◽  
Daisaku SAKAGUCHI

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