Investigation of Droplet Size Distribution in Two-Phase Flows Using a Combined Method for Recording Droplet Fluorescence and Diffraction Scattering of Light
A. G. Golubev, A. A. Sviridenkov, V. I. Yagodkin
Baranov Central Institute of Aviation Motors
yagodkin@ciam.ru
Keywords: fluorescence, Mie scattering, liquid droplet size, fuel concentration
Pages: 75-81
Abstract
A prototype of a combined measurement system (MS) based on the fluorescent and smallangle methods of determining the parameters of a fuel-air spray using a pulsed laser as a light source and a color digital video camera to record spray sections was designed and tested. The tests of the MS showed that it has good performance and is suitable for determining the characteristics of advanced atomizers in a pressure chamber. Spatial concentration distributions of aerosols generated by a centrifugal atomizer were studied. Distributions of time-averaged Sauter diameters of droplets, their concentration, and the circumferential inhomogeneity of droplet concentration in the spray cross section were obtained. A study of fuel atomization from a plate was performed showing the possibility of using this device in power plants to improve the atomization performance compared to the atomization of a free jet in crossflow.
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