风蚀风洞排沙器设计与性能试验  

Design and Performance Experiments of the Sand Discharger for Erosion Wind Tunnel

作　　者：冬梅[1] 赵士杰[2] 陈智[2] 孙悦超[3] 侯占峰[2] 

机构地区：[1]内蒙古农业大学能源与交通工程学院,呼和浩特010018 [2]内蒙古农业大学机电工程学院,呼和浩特010018 [3]内蒙古农业大学职业技术学院,内蒙古包头014109

出　　处：《农机化研究》2012年第10期135-138,共4页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(40861013);内蒙古自然科学基金项目(2010BS0607)

摘　　要：排沙器是利用风洞研究土壤风蚀问题时的重要装置。为此,针对0FDY-1.2可移动式风蚀风洞设计了排沙器,通过试验确定排沙器最小排沙量为0.53g/s。通过排沙器排沙一致性和排沙稳定性试验得出,其变异系数分别在3.65%～6.68%和3.52%～8.67%的范围内。同时,探索了排沙量在风洞流场内的分布均匀性情况,发现在风洞试验段入口6m风洞中央位置趋于风洞壁面处输沙量有减少的趋势。Sand discharger is the essential device in studying the soil aeolian erosion through wind tunnel.A Sand discharger is designed for the 0FDY-1.2 type movable wind tunnel and its minimum sand discharging rate is determined as 0.53g/s through experiments.The experiments of consistency and stability show that the variation coefficient of the sand discharging stabilities are in the range of 3.65%~6.68% and 3.52%~8.67% respectively.Besides,the law of the evenness of sand distribution on the flow field of wind tunnel is explored tentatively,which shows that there is a decreasing tendency of the sand introducing rate from the center to the wall of wind tunnel in the experimental section 6m away from the entrance.

关 键 词：土壤风蚀 风蚀风洞 排沙器 

分 类 号：S15[农业科学—土壤学]