| 仿生非光滑筛面近筛层微观气流场研究 |
| |
| 引用本文： | 马征,李耀明,徐立章.仿生非光滑筛面近筛层微观气流场研究[J].农业机械学报,2011,42(Z1):74-77，9. |
| |
| 作者姓名： | 马征 李耀明 徐立章 |
| |
| 作者单位： | 江苏大学;江苏大学;江苏大学 |
| |
| 基金项目： | 国家自然科学基金资助项目（50805068）;“十一五”国家科技支撑计划资助项目（2009BADB5B05、2010BAD01B06）;江苏大学校基金资助项目（10JDG088）;江苏省农业装备与智能化高技术研究重点实验室资助项目（BM2009703）;江苏高校优势学科建设工程资助项目(苏财教（2011）8号) |
| |
| 摘 要： | 以入风口角度和筛面形态为试验因素，对仿生非光滑筛面近筛层微观气流场进行了数值模拟研究，并对仿生非光滑清选筛和普通光滑清选筛进行了田间对比验证。试验结果表明：入风口角度对清选筛面上近筛层内的微观气流场基本没有影响；仿生非光滑筛面形态将筛孔间近筛层内的单个小漩涡分解为2个小漩涡，致使漩涡流线不能完全地从筛面经过，使得细小油菜物料难以与仿生非光滑筛面充分接触，起到了减粘作用；仿生凸包的减粘作用较仿生凹坑明显。
|
| 关 键 词： | 联合收获机 仿生 清选 气流场 |
Micro Flow Field on Adjacent Screen of Bionic Nonsmooth Cleaning Screen |
| |
| Ma Zheng,Li Yaoming and Xu Lizhang.Micro Flow Field on Adjacent Screen of Bionic Nonsmooth Cleaning Screen[J].Transactions of the Chinese Society of Agricultural Machinery,2011,42(Z1):74-77，9. |
| |
| Authors: | Ma Zheng Li Yaoming and Xu Lizhang |
| |
| Institution: | Jiangsu University;Jiangsu University;Jiangsu University |
| |
| Abstract: | Numerical simulation method was introduced to study the micro flow field on the adjacent screen layer (0~10mm in height range) of bionic nonsmooth screen, in which the draught angle and surface feature were chosen as factors. Bionic nonsmooth rape cleaning screen was made to compare with the common smooth screen in the field. The result showed that the draught angle basically had no influence on the micro flow field on the adjacent screen layer. The bionic feature would destruct the little vortex among the holes into two smaller vortexes which reduced the contact possibility between tiny rape materials and cleaning screen and lowered the adhesion degree. The result also showed that the bionic convex surface could lower adhesion better than bionic concave surface. |
| |
| Keywords: | Combine harvester Bionic Cleaning Flow field |
|
| 点击此处可从《农业机械学报》浏览原始摘要信息 |
| 点击此处可从《农业机械学报》下载免费的PDF全文 |
