文档介绍：分类号学校代码 10129
U D C 621 学号 2010205007

寒冷干旱地区日光温室内温度场的数值模拟
Numerical Simulation of Temperature Field inside Solar
Greenhouse in Cold-Arid Areas

申请人:苏佳佳
学科门类:工学
学科专业:机械设计及理论
研究方向:现代机械设计及理论
指导教师:塔娜教授

论文提交日期:二〇一三年六月
摘要

温度是影响室内作物生长的关键因子之一,对温室温度进行采集、监测,并对数
据进行分析、处理,以及准确掌握温室内温度场的变化规律,能够为温室建造及室内
温度的控制提供科学的理论依据,进而提高温室的生产力。
试验采用以单片机为核心的下位机无线多点实时测试系统,基于 Lab-VIEW 平台
进行数据采集、存储以及显示,分别选取雨夹雪天和晴天的试验数据进行分析,并运
用 CFD 方法对温室内温度场进行数值模拟。
结果表明,不管是雨夹雪天还是晴天,一天当中室内最低气温出现在 7:00 左右。
雨夹雪天室内最高气温出现在 12:00 到 14:00 之间,晴天室内最高气温出现在 14:00
左右。雨夹雪天 7:00 时和 14:00 时的室内温度分布规律都是:地面温度高于顶棚处
温度,后墙温度高于前面温度,东西两端温度相近。晴天室内温度分布规律是:7:00
时,地面温度高于顶棚温度,后墙温度高于前面温度,西面温度高于东面温度;14:00
时,顶棚温度高于地面温度,前面温度高于后墙温度,西面温度高于东面温度。通过
对比模拟值与实测值,证明运用 CFD 方法对温室模型的建立具有合理性和可行性。

关键词:寒冷干旱地区;日光温室;温度测试;模拟
Numerical Simulation of Temperature Field inside Solar Greenhouse in
Cold-Arid Areas

Abstract
Temperature is one of the key factors that have influences on indoor crops growth.
Therefore, it should gather and monitor the inside temperature, analyze and process the
data, and master the change rule of temperature field inside the greenhouse accurately to
provide scientific theory foundation for greenhouse builds and temperature control inside
oder to improve the productivity of greenhouse.
A lower machine wireless multi-point real-time testing system with the single-chip
puter as the core was used in this test. The data was gathered, saved and
displayed based on Lab-VIEW platform, and analyzed the test data gathered in sleet days,
the representative of the bad weather, and sunny days respectively, then using
computational fluid dynamics method to do numerical simulation of temperature field
inside the greenhouse.
It showed that regardless of sleet day or sunny day, the lowest indoor temperature
appeared at about 7:00 during the day. The highest indoor temperature appeared at between
12:0