摘要
利用大型风沙物理风洞实验装置 ,模拟铺沙地面在不同风速条件下对不同粒径的沙样和混合沙的起电电场、电位和荷质比作实验测量。结果表明 :存在风沙起电效应。风洞内电场多为负极性 ,最大电场达到 - 2 9kV·m- 1 ,导线电位可达 12 0mV。沙粒越细 ,起电越强 。
Using a big wind tunnel laboratory equipment, electric field intensity, electric potential and sand particle charge were simulated and measured for different sand sample and wind velocity. The result show that the blown sand have electrification effect, the most of electric fields are nagetive, maximun average electric field intensity is -29 kV·m -1 , electric potential is 120 mV. The blown sand electrification increased with increase of wind velocity and decrease of sand particle size.
出处
《高原气象》
CSCD
北大核心
2002年第4期402-407,共6页
Plateau Meteorology
基金
中国科学院寒区旱区环境与工程研究所创新项目 (2 10 0 2 7)
国家自然科学基金项目 (4 9975 0 0 2 )共同资助
