扇形喷头雾滴粒径分布风洞试验

张慧春 Zhang, Huichun, Dorr, Gary, 郑加强 Zheng, Jiaqiang and 周宏平 Zhou, Hongping (2012) 扇形喷头雾滴粒径分布风洞试验. Nongye Jixie Xuebao, 43 6: 52-57. doi:10.6041/j.issn.1000-1298.2012.06.010


Author 张慧春 Zhang, Huichun
Dorr, Gary
郑加强 Zheng, Jiaqiang
周宏平 Zhou, Hongping
Title 扇形喷头雾滴粒径分布风洞试验
Translated title Wind tunnel experiment of influence on droplet size distribution of flat fan nozzles
Language of Title chi
eng
Journal name Nongye Jixie Xuebao
Translated journal name Transactions of the Chinese Society of Agricultural Machinery
Language of Journal Name chi
eng
ISSN 1000-1298
Publication date 2012-06
Sub-type Article (original research)
DOI 10.6041/j.issn.1000-1298.2012.06.010
Open Access Status
Volume 43
Issue 6
Start page 52
End page 57
Total pages 6
Place of publication Beijing, China
Publisher Zhongguo Nongye Jixiehua Kexue Yanjiuyuan
Language eng
chi
Subject 2210 Mechanical Engineering
1100 Agricultural and Biological Sciences
Formatted abstract
利用开路式风洞系统和Sympatec激光粒度仪测试了参考喷头的雾谱尺寸以此作为喷头雾谱等级的依据。对扇形雾喷头在不同压力、风速、喷头与激光粒度仪距离情况下的雾滴粒径、数量和范围进行了试验。试验结果表明,压力、风速、喷头与激光粒度仪之间距离的增大,都导致扇形雾喷头的雾滴体积中径变小,尺寸小于150μm的雾滴占全部雾滴体积的百分比变大,增加了农药脱靶飘移的可能性,同时压力和风速的增大都导致部分喷头的雾谱等级降低。为了保证激光粒度仪对雾滴粒径测试结果的可靠性,可以使用风洞试验和调整喷头与激光粒度仪的距离,来减小因细小雾滴通过激光束过程中速度迅速衰减而对测量结果带来的影响。

To research the influence of spray operation parameters on droplet size distribution of flat fan nozzle, experiments were conducted by using an open circuit wind tunnel and a Sympatec laser diffraction analyzer. The droplet size of reference nozzle was tested to classify the nozzles’ spray spectra. The droplet size distribution generated by different types of nozzles at different spraying pressure for different wind speed with various distances between the nozzle and the laser beam was analyzed. Experimental results showed that the VMD and percentage of the total volume contained in droplet sizes less than 150μm increased with the increasing of the spray pressure, wind speed and distances between the nozzle and the laser beam. Moreover, the classifications of nozzle’s spray spectrum became lower when the pressure and wind speed rose. The distance between the nozzle and the laser beam and wind tunnel experiment could be used to ensure the accuracy and reliability of measurement results when the laser diffraction analyzer was used to test the droplet size.
Keyword Flat fan nozzle
Reference nozzle
Wind tunnel experiment
Droplet size distribution
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Science Publications
 
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