Measurement of Soot Concentration in the Gaseous Diffusion Flame by YAG Laser Sheet Method
1995 Volume 30 Issue 4 Pages 326-331
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1995 Volume 30 Issue 4 Pages 326-331
The measurements of two-dimensional distribution of soot concentration are necessary for better understanding of the conditions of the soot formation and decomposition during the rapid combuston. The YAG laser sheet (50 mm×0.5 mm) of wavelength 532 nm (22mJ/pulse) was used as the light source for Mie's theory. The visualization of soot particles was realized by a ICCD camera via a high-speed gated image intensifier. The scattered light images in the C3H8/Air diffusion flame were measured at various cross sections above the nozzle tip. Spatial distribution (maps) plots for the soot volume fraction were obtained in the flame from the inspectional data by the light attenuation techniques. The soot volume fraction lies within the limits of 10-7 and 10-5 cm3/cm3, and have maxima at the near part of flame front.
Larger peak values are found in the vicinity of the burner port. Those experimental results agree approximately with the previous data obtained by the light attenuetion technices.
