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| 基于CFD的植物工厂管道通风模拟及优化 |
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吴晨溶1,2,程瑞锋1,2,方慧1,2*,杨其长1,2,张晨1,2
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| (1.中国农业科学院 农业环境与可持续发展研究所, 北京 100081;2.农业农村部设施农业节能与废弃物处理重点实验室, 北京 100081) |
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| 摘要: |
| 针对植物工厂中传统通风模式难以实现内部气流均匀分布的问题，在满足合适的管孔径比情况下，通过计算设计了管道通风方案，利用计算流体力学CFD(Computational fluid dynamics)仿真软件对不同方案的作物冠层气流场进行模拟，探究管孔直径、管孔数量及进风口风速对作物冠层气流分布的影响，确定最佳管道通风方案。结果表明:所有的管道通风方案气流均匀性均优于传统通风模式，且进风口风速为3 m/s的25孔管道通风方案最佳，此时作物冠层表面平均风速为0.55 m/s，适宜区(风速范围为0.3~1.0 m/s)面积占冠层表面总面积的86.1%。 |
| 关键词: 植物工厂 管道通风 作物冠层 气流均匀性 计算流体力学(CFD) |
| DOI：10.11841/j.issn.1007-4333.2021.01.09 |
| 投稿时间：2020-05-11 |
| 基金项目:宁夏回族自治区重点研发计划项目(2018BBF02012)；中央级公益性科研院所基本科研业务费专项(Y2019XK21-01) |
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| Simulation and optimization of air tube ventilation in plant factory based on CFD |
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WU Chenrong1,2,CHENG Ruifeng1,2,FANG Hui1,2*,YANG Qichang1,2,ZHANG Chen1,2
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| (1.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agriculture Sciences, Beijing 100081, China;2.Key Laboratory of Energy Conservation and Waste Management of Agriculture Structures of Ministry of Agriculture and Rural Affairs, Beijing 100081, China) |
| Abstract: |
| Aiming at the problem of uneven airflow distribution and tipburn appear frequently in the traditional ventilation mode, under the condition of satisfying the appropriate tube aperture ratio, CFD(Computational fluid dynamics)simulation software was adopted to simulate the airflow distribution of crop canopy under different cases designed. The effect of hole diameter, hole number and inlet air velocity on crop canopy air velocity distribution were explored and the optimal tube ventilation case was determined finally. The results showed that the airflow uniformity of all ventilation cases was better than that of traditional ventilation mode. By comparing and analyzing the proportion of the average air velocity on the surface of the crop canopy and the suitable area(the wind speed range was 0. 3-1. 0 m/s), it was found that the 25-holetube ventilation case with the inlet air velocity of 3 m/s was the best. The average air velocity on the surface of the crop canopy was 0. 55 m/s, and the suitable area accounted for 86. 1% of the total canopy surface area. |
| Key words: plant factory tube ventilation canopy airflow uniformity computational fluid dynamics |
