SCI和EI收录∣中国化工学会会刊

›› 2009, Vol. 17 ›› Issue (1): 8-19.

• FLUID FLOW AND TRANSPORT PHENOMENA • Previous Articles     Next Articles

Simulation of Droplet-gas Flow in the Effervescent Atomization Spray with an Impinging Plate

QIAN Lijuan1, LIN Jianzhong1,2, and XIONG Hongbing1   

  1. 1. Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China;
    2. China Jiliang University, Hangzhou 310018, China
  • Received:2008-01-13 Revised:2008-10-28 Online:2009-01-28 Published:2009-01-28
  • Supported by:
    Supported by the Major Program of the National Natural Science Foundation of China(10632070)

Simulation of Droplet-gas Flow in the Effervescent Atomization Spray with an Impinging Plate

钱丽娟1, 林建忠1,2, 熊红兵1   

  1. 1. Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China;
    2. China Jiliang University, Hangzhou 310018, China
  • 通讯作者: LIN Jianzhong, E-mail: mecjzlin@public.zju.edu.cn
  • 基金资助:
    Supported by the Major Program of the National Natural Science Foundation of China(10632070)

Abstract: A comprehensive three-dimensional model of droplet-gas flow was presented to study the evolution of spray in the effervescent atomization spray with an impinging plate.For gas phase, the N-S equation with the k-ε turbulence model was solved, considering two-way coupling interaction between droplets and gas phase.Dispersed droplet phase is modeled as Lagrangian entities, accounting for the physics of droplet generation from primary and secondary breakup, droplet collision and coalescence, droplet momentum and heat transfer.The mean size and statistical distribution of atomized droplets at various nozzle-to-plate distances were calculated.Some simulation results were compared well with experimental data.The results show that the existence of the impinging plate has a pronounced influence on the droplet mean size, size distribution and the droplet spatial distribution.The air-to-liquid ratio has obvious effects on the droplet size and distribution.

Key words: effervescent atomization spray, impinging plate, droplet distribution, Sauter mean diameter, simulation

摘要: A comprehensive three-dimensional model of droplet-gas flow was presented to study the evolution of spray in the effervescent atomization spray with an impinging plate.For gas phase,the N-S equation with the k-ε turbulence model was solved,considering two-way coupling interaction between droplets and gas phase.Dispersed droplet phase is modeled as Lagrangian entities,accounting for the physics of droplet generation from primary and secondary breakup,droplet collision and coalescence,droplet momentum and heat transfer.The mean size and statistical distribution of atomized droplets at various nozzle-to-plate distances were calculated.Some simulation results were compared well with experimental data.The results show that the existence of the impinging plate has a pronounced influence on the droplet mean size,size distribution and the droplet spatial distribution.The air-to-liquid ratio has obvious effects on the droplet size and distribution.

关键词: effervescent atomization spray, impinging plate, droplet distribution, Sauter mean diameter, simulation