Wind tunnel simulation experiment and investigation on the electrification of sandstorms

Science in China Series D: Earth Sciences - Tập 47 - Trang 529-539 - 2004
Qu Jianjun1, Muhong Yan1, Guangrong Dong1, Hongfa Zhang1, Ruiping Zu1, Wanquan Tuo1, Aiguo Zhao1, Zhenghua Xiao1, Fang Li1, Bao Yang1
1Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute and Shapotou Desert Research and Experiment Station, Chinese Academy of Sciences, Lanzhou, China

Tóm tắt

Electric discharge phenomenon is often observed during the passage of sandstorms over desert regions and sometimes does great damage to human beings. Based on previous researches on the electrification of sandstorms by the scholars both at home and aboard, the authors conducted the simulation experiments on the electric fields of sandstorm-triggered creeping-saltating sand, suspending sand and watered suspending sand in the large-scale wind tunnel. According to the experimental results the electric field structure and its formation mecha-nism were analysed and discussed, the quantity of electric charges and electric field strength were measured and calculated, and finally several conclusions were drawn.

Tài liệu tham khảo

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