Abstract
基于CFD模拟技术建立了温室风送式弥雾机气流速度场分布模型和雾滴沉积模型。根据实测的弥雾机相关参数,确定了边界条件及模型参数,得到了不同风送气流速度和不同喷头体倾角条件下的弥雾机气流速度场分布特性和雾滴沉积规律。设计了与模拟条件相同的验证实验,对模拟结果进行了验证分析。研究表明,模拟结果能够较准确地反映雾滴沉积规律,喷头体安装倾角为5°～10°时,弥雾机气流速度场分布有利于药液获得较好的沉积效果。
Simulating models of air-velocity distribution and droplets deposition were developed based on CFD technology. The simulation boundary conditions and model variables were defined according to the working parameters measured from the mist-sprayer. Based on these models, air-velocity distribution characteristic and droplets deposition pattern were obtained on various simulation condition such as different air-assisted velocities and nozzle installation angles. The relative errors of simulated results were confirmed through corresponding experiments on the same condition. The result showed that air-velocity distribution of the mist-sprayer was more advantageous to obtain better effect of droplet deposition when the nozzle installation angle was in the range of 5° to 10°.
| Translated title of the contribution | Analysis on features of air-velocity distribution and droplets deposition pattern for greenhouse air-assisted mist sprayer |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 71-77 |
| Number of pages | 7 |
| Journal | 农业机械学报 |
| Volume | 43 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2012 |
Scopus Subject Areas
- Agricultural and Biological Sciences(all)
- Mechanical Engineering
User-Defined Keywords
- Air-assisted mist sprayer
- Air-velocity distribution
- Droplets deposit
- Greenhouse