Spatiotemporal Analysis of Ventilation Efficiency in Single-Span Plastic Greenhouses in Hot-Humid Regions of China: Using Validated CFD Modeling

作者：Song Wang, Naimin Kong, Lirui Liang, Yuexuan He, Wenjun Peng, Xiaoli Lü, Chi Qin, Zijing Luo, Wei Zhao, Chengyao Jiang, Mengyao Li, Yangxia Zheng, Jane W. Z. Lu · 发表于：Agriculture · 年份：2025 · DOI：10.3390/agriculture15161792 · 被引用次数：3 · 研究领域：Greenhouse Technology and Climate Control

To characterize the spatiotemporal distribution of temperature and airflow in single-span plastic-film greenhouses, we coupled field experiments with three-dimensional computational fluid dynamics (CFD) simulations in a warm–temperate region of China. Model reliability and validity were evaluated against field measurements. The average and maximum relative errors between simulated and measured values were 6% and 9%, respectively. Significant spatial heterogeneity in both temperature and airflow was observed. Vertically, temperature rose with height; horizontally, it declined from the center toward the sidewalls. Under prevailing meteorological conditions, the daily maxima occurred at distinct elevations above the fan-vent outlets. Airflow was most vigorous near the vents, whereas extensive stagnant zones aloft reduced overall ventilation efficiency. These findings provide a quantitative basis for designing single-span plastic film greenhouses in China’s hot–humid regions, informing ventilation improvements, and guiding future optimization efforts.