| 典型液力喷头在风洞环境中的飘移特性试验与评价 |
| |
| 引用本文： | 曾爱军,何雄奎,陈青云,刘亚佳.典型液力喷头在风洞环境中的飘移特性试验与评价[J].农业工程学报,2005,21(10):78-81. |
| |
| 作者姓名： | 曾爱军 何雄奎 陈青云 刘亚佳 |
| |
| 作者单位： | 中国农业大学理学院，北京 100094;中国农业大学理学院，北京 100094;中国农业大学理学院，北京 100094;联邦德国农林生物研究中心, Braunschweig;中国农业大学理学院，北京 100094 |
| |
| 基金项目： | 国家自然科学基金(30100113) |
| |
| 摘 要： | 依照联邦德国农林生物研究中心(BBA)对植保机械的测试准则和技术，对国内常用的5种典型液力喷头的雾化性能参数进行了测试，并在不同风洞环境条件下(压力、风速和温湿度)的飘移特性进行了对比试验及评价。通过测定在喷头下风向2 m处垂直测试平面内的雾滴飘移量计算出飘移潜在指数(DIX)，用于评价喷头的飘移特性，是一种简单实用的有效方法。结果表明，小型号喷头的飘移性远大于大型号喷头；雾滴大小和风速是影响飘移的最主要因素。
|
| 关 键 词： | 喷头 风洞 飘移 飘移潜在指数 评价 |
| 文章编号： | 1002-6819(2005)10-0078-04 |
| 收稿时间： | 2004-12-21 |
| 修稿时间： | 2005-03-15 |
Spray drift potential evaluation of typical nozzles under wind tunnel conditions |
| |
| Zeng Aijun,He Xiongkui,Chen Qingyun and Liu Yajia.Spray drift potential evaluation of typical nozzles under wind tunnel conditions[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21(10):78-81. |
| |
| Authors: | Zeng Aijun He Xiongkui Chen Qingyun and Liu Yajia |
| |
| Institution: | 1. College of Science, China Agricultural University, Beijing 100094, China; 2. German Federal Biological Research Centre for Agriculture and Forestry, Braunschweig, Germany |
| |
| Abstract: | According to the guidelines for plant protection equipment tests established by the German Federal Biological Research Centre for Agriculture and Forestry(BBA), measurements of the drift potential under different wind tunnel conditions(spray pressure, wind speed, temperature and relative humidity) were made for five typical nozzles. A Drift Potential Index(DIX) was calculated from parameters of vertical drift concentration in a section 2 m downwind from the nozzle. This is a practical and easy method to evaluate the driftability of the sprays. The results show that the drift potential decreases with increasing nozzle size and that there is a great influence of the droplet size and wind velocity on the drift potential. |
| |
| Keywords: | Nozzles wind tunnel spray drift drift potential index evaluation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
| 点击此处可从《农业工程学报》下载免费的PDF全文 |
