%0 Journal Article %A Almeida, H. %A Sousa, J. M. M. %A Costa, Mário %D 2014 %I Begell House %K pressure atomizer, liquid spray, angled injection, air crossflow %N 1 %P 81-96 %R 10.1615/AtomizSpr.2013008310 %T EFFECT OF THE LIQUID INJECTION ANGLE ON THE ATOMIZATION OF LIQUID JETS IN SUBSONIC CROSSFLOWS %U https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,40b59e6a0433c9dc,45533171719076d4.html %V 24 %X This work is focused on the study of sprays produced by pressure atomizers of single-hole type when subjected to air crossflows at atmospheric pressure. The study was carried out in a wind tunnel. Prior to spray characterization, the airflow inside the wind tunnel was evaluated with the aid of laser Doppler anemometry. The sprays were first characterized using a shadowgraphy technique, which allowed for a qualitative evaluation of the overall quality of the atomization. Subsequently, the use of phase Doppler anemometry allowed performing detailed measurements of the spray droplet diameters and velocities, as a function of the injection angle, for various nondimensional atomizer distances. The main findings of this study are as follows: (i) The liquid column disintegration process is significantly affected by the liquid injection angle and, less considerably, by the liquid-to-air momentum flux ratio; (ii) the Sauter mean diameter decreases noticeably as the injection angle of the liquid increases; and (iii) the characteristics of droplet diameter and velocity distributions vary significantly as the distance to the injector increases. %8 2014-01-10