基于CFD模型的圆拱型冬枣大棚通风方式的研究

Study on Ventilation Mode of Circular Arch Winter Jujube Greenhouse based on CFD Model

本文以大荔县圆拱型塑料冬枣大棚为研究对象,进行了现场测试,对大棚内温湿度分布进行了数值模拟,建立了描述大棚温湿度分布的CFD模型,并用模拟值对实测值进行了验证。结果显示,温湿度模拟值与实测值吻合较好,说明所建立的模型对预测大棚内环境效果较好。同时,针对一天中不同时刻,选取了合适的通风措施,从而满足作物生长的基本要求,提高生产效益。

The field test of the round arch plastic winter jujube greenhouse in Dali County was carried out, the temperature and humidity distribution and in the greenhouse were simulated, and the CFD model describing the temperature and humidity distribution in the greenhouse was established, and the measured values were verified by the simulation values. The results show that the simulated values of temperature and humidity are in good agreement with the measured values, which indicates that the established model is effective in predicting the environment in the greenhouse. At the same time, appropriate ventilation measures were selected at different times of the day to meet the basic requirements of crop growth and improve production efficiency.