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Volume 24 Issue 1
Jan.  1998
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Journal of Beijing University of Aeronautics and Astronautics  > 1998  >  24(1): 24-27.
Jin Hongtao, Jiao Zongxia, Li Chenggong, et al. Modeling and characteristics analysis of redundant direct drive servo actuating system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(09): 1059-1062. (in Chinese)
Citation: Liang Xueping, Guo Zhihui, Xu Hang, et al. Influence of Gas Injector Geometry on Atomization Performance of Horizontally Injecting Effervescent Atomizers[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(1): 24-27. (in Chinese)
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Influence of Gas Injector Geometry on Atomization Performance of Horizontally Injecting Effervescent Atomizers

  • Beijing University of Aeronautics and Astronautics,Dept.of Jet Propulsion

  • Received Date: 14 Jun 1996
  • Publish Date: 31 Jan 1998
    Abstract
  • The atomizing performance of effervescent atomizers are examined with special emphasis on the influence of gas injector geometry on spray characteristics.A particle dynamic analyzer (2D PDA) is used to measure mean drop size,drop size distribution and velocity distribution.All tests are carried out at normal atmospheric pressure and temperature.Water injection pressures are varied from 0.20 to 0.60 MPa and air/liquid ratios from 0.04 to 0.12 by mass.Three different gas injectors are used,one having 4 holes,each of 2.2 mm diameters and the others 20 holes of 0.7 and 1.0 diameters.They are used in conjunction with three mixing tubes of different lengths.The results obtained show that the changes in the number and size of the gas injection holes have significant influence on atomization qualities of horizontally ejecting effervescent atomizers.Moreover,there is an optimum length of the mixing tube leading to higher atomization quality.However,when swirling the liquid,atomization quality appears to be slightly improved.

     

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    • References(1)
  • 1. 范全林,郭志辉．气泡雾化喷嘴的水平喷射特性研究．动力学报,1996,12(4):23~26 2. Wang X F,Chin J S,Lefebvre A H．Influence of gas-injector geometry on atomization performance of aerated liquid nozzles．International Journal of Turbo and Jet-Engines,1989,6(4):271~279 3. Rossler T C,Lefebvre A H．Studies on aerated-liquid atomization．International Journal of Turbo and Jet-Engines,1989,6(7):221~229 4. Chen S K,Lefebvre A H,Roubuhler J．Influence of ambient air pressure on effervescent atomization．AIAA Journal of Propulsion and Power,1993,9(5):10~15 5. Lefebvre A H,Wang X F,Matin C A．Spray characteristics of aerated-liquid pressure atomizers．AIAA Journal of Propulsion and Power,1988,4(8):293~298
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