Abstract
With the Phase Doppler Analyzer (PDA), the distribution characteristics of the liquid propellant simulated media produced by the designed counter dual-swirl air blast atomizer are studied. The results indicate that, the maximum axial mean velocity decreases with the increase of the axial distance away from the swirl exit plane, but the uniformity of the distribution along the radial direction are better and the differences among the degree axes decay. The circumferential distribution of the droplets’ diameter is uneven. The uniformity of the droplets’ diameter decreases after increases along with the radial direction. The mean diameters of the droplets increase first, and then decrease with the increase of the radial distance away from the center axis. The distribution of the droplets along the radial direction is better as the spray evolves to downstream.
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