Experimental study on the characteristics of swirl effervescent atomizer

ZHAO Fang; XU Bingbing; FU Cheng; WANG Yue; ZHANG Haiyang

doi:10.11729/syltlx20210026

Volume 36 Issue 6

Dec. 2022

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Journal of Experiments in Fluid Mechanics > 2022 > 36(6): 28-35. > DOI: 10.11729/syltlx20210026

ZHAO F，XU B B，FU C，et al. Experimental study on the characteristics of swirl effervescent atomizer[J]. Journal of Experiments in Fluid Mechanics，2022，36（6）：28-35.. DOI: 10.11729/syltlx20210026

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Experimental study on the characteristics of swirl effervescent atomizer

ZHAO Fang^{1, 2,},
XU Bingbing^{1, 2},
FU Cheng^{1, 2},
WANG Yue³,
ZHANG Haiyang^{1, 2, ,}

1.
State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang　621000, China
2.
Facility Design and instrumentation institute, China Aerodynamics Research and Development Center, Mianyang　621000, China
3.
School of Energy and Environment Engineering, Hebei University of Technology, Tianjin　300401, China

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Received Date: March 31, 2021
Revised Date: June 17, 2021
Accepted Date: July 04, 2021
Available Online: February 16, 2022

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Abstract

Abstract

Compared with the conventional pressure atomization and pneumatic atomization, effervescent atomization has the advantages of high efficiency, economy and environmental protection, which has attracted the attention of various fields. In this paper, a series of experiments were carried out on a variable nozzle internal swirling effervescent atomizer, and the effects of the working parameters, hole structure and mesh number on the flow and spray characteristics were discussed. The results show that flow characteristics of the atomizer with different hole structures are basically the same. The change of the air-liquid ratio results in the change of the liquid mass flow rate under the same working pressure. Flow characteristics are not affected by the cutting screen, while the addition of the cutting screen induces 3%–7% attenuation of the spay mass flow rate of under the same working condition, and the smaller the cutting screen aperture is, the greater the reduction of the spray mass flow rate is. The distribution of spray particles presents a single peak structure, and the median mean diameter of the spray decreases with the increase of the working pressure or air-liquid ratio. Under the same spray energy consumption, the special-shaped hole structure is more helpful to improve the spray performance. The cutting screen is beneficial to the spray performance, but the choice of the mesh aperture should be made based on the atomizer structure, the working pressure and other comprehensive judgment; in addition, the addition of the cutting screen reduces the axial velocity of the spray mainstream to a great extent.
- variable nozzle,
- internal swirling,
- effervescent atomizer,
- hole structure,
- cutting screen,
- air-liquid ratio

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References

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