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Position: Home > Articles > Temperature Homogeneity Control of Greenhouse Based on CFD Simulation Model Transactions of the Chinese Society for Agricultural Machinery 2012,43 (4) 156-161

基于CFD模拟模型的温室温度场均匀性控制

作  者:
李永博;周伟;李鹏飞;汪小旵;丁为民
单  位:
南京农业大学工学院
关键词:
温室控制;CFD;试验设计;温度场;均匀性
摘  要:
为达到精确控制温室环境因子的目的,提出一种基于计算流体力学(CFD)模拟模型的试验设计(DOE)优化控制系统,通过正交试验设计,在尽可能少的CFD求解次数下,获得环境因子控制的最优组合;以温度场控制为例,通过引入均匀性评价指标,以CFD为计算工具不断改变控制输入的组合,使该指标达到极小,从而在原有温度定值控制基础上,使温室作物温度生长的局部差异减小,提高温室综合生产效率;最后以试验实例给出了这种方法求解的基本过程,结果表明优化后的效果明显,控制组合方式易于获得。
译  名:
Temperature Homogeneity Control of Greenhouse Based on CFD Simulation Model
作  者:
Li Yongbo1,2 Zhou Wei1 Li Pengfei1 Wang Xiaochan1,2 Ding Weimin1,2 (1.College of Engineering,Nanjing Agricultural University,Nanjing 210031,China 2.Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province,Nanjing Agricultural University,Nanjing 210031,China)
关键词:
Greenhouse control,CFD,DOE,Temperature field,Homogeneity
摘  要:
In order to achieve precise control effect of greenhouse environmental factors,an innovative optimization control system arithmetic based on CFD was presented.By using orthogonal experiment in DOE,controller design in the optimal system was obtained,meanwhile,iteration times of CFD could be reduced as soon as possible.Taking control temperature field as an example,through setting up temperature distribution index and making its minimum by the strategy of using iterative algorithm with CFD calculated,the difference of temperature distribution could be decreased.The greenhouse comprehensive production efficiency was improved.Lastly,an experiment was illustrated by proposed method.The results showed that the algorithm was proved to achieve the control law easily.

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