Pages 67-68
This paper presents effects of impingement atomization on air-blast atomizer for jet engines. In current jet engines, so-called air-blast atomizer is widely used. Combining the wall impingement atomization with air-blast atomizer may give improvement of atomization. The air velocity was varied from 41 m/s to 92 m/s and the liquid injection pressure was form 0.5 MPa to 7.5 MPa. Since, in the previous study, it was shown that impingement point of the liquid influences S.M.D. (Sauter mean diameter), so impingement point was varied from 0.5 mm to 2.5 mm upstream from the lip. In case of 0.5 mm upstream from the lip, S.M.D. was 1/3 compared with 2.5 mm upstream from the lip.
