为了解不同配置参数下地埋管道在冬季日光温室中的加温效果,该文通过计算流体力学方法模拟不同进口温度（50、45、40、35、30 ℃）、不同管径（16、20、25、32、40 mm）和不同流速（0.2、0.4、0.6、0.8、1.0 m/s）时的土壤温度分布。结果表明,地埋管道进口温度40 ℃、管径32 mm时,能确保芹菜根系处于适宜的生长温度范围内。然而,进口流速的变化对土壤中同一位置处的温度影响不显著。
Abstract
To evaluate the heating effect of buried pipes in solar greenhouses during winter under different parameter settings, this study employed computational fluid dynamics (CFD) to simulate soil temperature distributions under varying inlet temperatures （50,45,40,35,and 30 ℃）, pipe diameters （16, 20, 25, 32, 40 mm）, and flow velocities （0.2, 0.4, 0.6, 0.8, 1.0 m/s）. The results indicate that with an inlet temperature of 40 ℃ and a pipe diameter of 32 mm, the soil temperature around celery roots can be maintained within the suitable growth range. In contrast, variations in inlet flow velocity showed no significant effect on the temperature at the same soil location.
关键词
地下传热 /
土壤温度 /
计算流体力学 /
日光温室 /
参数优化
Key words
underground heat transfer /
soil temperature /
computational fluid dynamics /
solar greenhouse /
parameter optimization
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基金
内蒙古自治区直属高校基本科研业务费（BR22-14-03）; 内蒙古自治区自然科学基金（2022M803040; 2024QN03058）; 一流学科科研专项（YLXKZX-NND-009）
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