基于流体力学的湿帘风机温室内气流运动的模拟分析（英）

湿帘风机冷却系统温室内的气流运动和微环境特征的研究对整个冷却系统的冷却效率及温室环境调控方案的确立有着重要的指导意义，该研究通过流体力学商用软件有限元法对温室内横断面的温度，气流，湿度分布进行仿真计算，在温室模型中考虑到作物群体对气流的阻碍作用，将作物群体作为多孔介质进行模型化处理，分析湿帘风机冷却系统不同的工作条件下即（1风机工作，2风机湿帘共同工作），温室内微环境的时空变化规律，通过实测数据进行验证计算结果表明，气流速度的误差在2.1%到18.3%, 温度误差范围较小在0.1%到2.6%，湿度误差在2.0到12.64%。

CFD analysis of airflow distribution in greenhouse with pad and fan cooling system

The air circulation and microclimate distribution in a forced ventilation greenhouse with pad and fan cooling system was analyzed by means of computational fluid dynamics (CFD) based on the finite element method. The simulation concerned the distribution of temperature, airflow, humidity in the latitudinal cross-section in the greenhouse. Two cases in two operation conditions (1. only pad operation, 2. pad and fan operation) were investigated: in the first case there was no crop inside the greenhouse, while in the second greenhouse, the crop was simulated as porous material and was governed by the Darcy-Forcheimier equation in the model. The model simulations were validated with respect to temperature, airflow speed and relative humidity field measurement inside the experimental greenhouse. The simulation errors were 0.10% to 2.63%, 0.81% to 18.54% and 2.0%-12.64% for air velocity, air temperature and humidity respectively at the observation points.