Atomization of Water Jet Spray by a High-Speed Crossflow : Instability and Disintegration of Liquid Column

Abstract

The waves generated on the liquid column surface were an important origin of the liquid column disintegration. Hence, the wave characteristics on the liquid column injected perpendicularly into an airstream were experimentally studied. The propagation velocity, the wavelength, and the amplitude of the wave were measured from the images by high-speed video camera with a speed of 40,500 frames per second. The propagation velocity of the wave near the liquid nozzle was almost same as the injection velocity. Although the injection velocities were varied, the wavelength and the amplitude of the wave near the liquid nozzle were kept almost constant, respectively.