主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (12): 1709-1712.

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Simulation and experimental study on rotary core atomizing nozzle

XIAN Xue-lei1, MA Jian-qin1, DONG Hai-bin1, LIU Lian-xi1, SHENG Yan-feng1, LING Zong-yu2   

  1. 1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. Anhui L.Z Electromechanical Equipment Co., Ltd., Anhui Hefei 230031, China
  • Online:2020-12-15 Published:2020-12-15

Abstract:

In order to study the spraying characteristics of a single- hole rotary core atomizing nozzle, the flow field and outflow field of the single-hole rotary core atomizing nozzle were simulated by establishing the numerical model, and the atomizing mechanism of the internal flow field and the distribution characteristics of the droplets in the outflow field were analyzed. The accuracy of the simulation was verified combining with the actual spraying. The results showed that the liquid discharge velocity can be greatly increased during the discharge process of the rotary core nozzle, and a hole can be formed at the nozzle, which can significantly improve the atomization efficiency. At low pressure, the nozzle can atomize water with a particle size of no more than 80 μm with uniform particle size distribution.  

Key words: rotary core, atomizing nozzle, simulation