Simulation and optimization of the air flow and temperature in plant factory with artificial light based on CFD
3 Dmodel of air ventilation and circulation system was designed to improve the velocity and temperature value and their uniformity in plant factory.CFD (Computational fluid dynamics)was applied to create a threedimensional model and the whole plant factory was divided into grids and simulated.CFD model was validated through experimental data comparison of the distribution of air flow and temperature.The maximum absolute error,average relative error and root mean square error of wind speed and temperature were 0.12m/s,1.1℃;11％,4％;0.18m/s, 1.3 ℃,respectively,which showed that simulation was accurate.Three cases were studied and compared in this study.The results showed that improve the velocity and temperature value and their uniformity were improved in all three optimized models compared with control.By comparing wind speed and temperature value of plant canopy surface,the average wind speed increased by 0.51m/s,the coefficient of variation(CV)reduced by 17％ and the average temperature reduced by 0.5℃,was the best air circulation system.This study provided theoretical basis for the design of air circulation system in plant factory.
国家科技期刊平台
NSTL
万方数据
维普
