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<p>To investigate the influence of ambient pressure and gas–liquid ratio (GLR) on the atomization characteristics of an effervescent atomizer, a phase Doppler interferometer was employed to measure the droplet diameter distribution and velocity distribution. The results showed that the SMD decreased with an increase in the axial and radial distances. When the axial distance was less than 15&#xa0;mm, the SMD increased with increasing GLR. The opposite trend was observed with an increase in the ambient pressure. As the axial distance further increased, the increased GLR promoted droplet breakup, while the increased ambient pressure inhibited the development of the spray pattern. Specifically, an elevated GLR had a positive influence on the droplet breakup, while the increased ambient pressure inhibited droplet breakup along the radial direction. The axial velocity first increases rapidly and then decreases slowly with the increase in axial distance, and it decreased with increasing radial distance.</p>

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Experimental Study on Atomization Characteristics of an Effervescent Atomizer Under Ambient Pressure

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Chen Chen,
  • Yahong Han,
  • Yunfei Wang,
  • Yang Yang

摘要

To investigate the influence of ambient pressure and gas–liquid ratio (GLR) on the atomization characteristics of an effervescent atomizer, a phase Doppler interferometer was employed to measure the droplet diameter distribution and velocity distribution. The results showed that the SMD decreased with an increase in the axial and radial distances. When the axial distance was less than 15 mm, the SMD increased with increasing GLR. The opposite trend was observed with an increase in the ambient pressure. As the axial distance further increased, the increased GLR promoted droplet breakup, while the increased ambient pressure inhibited the development of the spray pattern. Specifically, an elevated GLR had a positive influence on the droplet breakup, while the increased ambient pressure inhibited droplet breakup along the radial direction. The axial velocity first increases rapidly and then decreases slowly with the increase in axial distance, and it decreased with increasing radial distance.