Experimental study of aviation kerosene atomization by mean of the compressed-air injection system with a high pressure
M.D. Garipov1, R.F. Zinnatullin1, A.A. Melkov1, E.M. Khalilov1, V.A. Shayakhmetov1, O.A. Gobyzov2
1Ufa University of Science and Technology, Ufa, Russia
2Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: compressed-air atomizer, aviation kerosene, shadow photography, study of droplet size distribution, spray penetration, Sauter mean diameter
Abstract
The paper investigates the geometry and droplet size distribution of a fuel spray produced by an injection system with air-assisted (pneumatic) atomizer. Two optical research methods, based on the processing of images obtained through shadow photography, were employed. The evolution of a pulsed spray was studied using a high-speed video camera with a macro lens. Droplet size distributions were studied using a camera equipped with a long-distance microscope and backlighting comprising a luminescent background screen and a pulse laser. The study was conducted for air-to-fuel mass flow rate ratios (ALR) of 1 and 0.16. The Sauter mean diameter for atomized droplets was 13 and 18 microns for the ratio values of 1.0 and 0.16, respectively.
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