摘要
针对微碳汇植物培养箱温度场不均匀导致植物生长的差异性,从而影响微碳汇研究的准确性问题,提出几种加热方案,利用Fluent对不同方案下的培养箱温度场进行仿真,分析不同目标温度下培养箱内部植物区温度场的均匀性与热风机位置、个数、送风速度的关系,找到最佳加热方案,提高植物区温度场均匀性。结果表明,单热风机加热时植物区温度场均匀性普遍优于双热风机加热,但实时性较差。增加热风机送风速度,可提高植物区温度场均匀性和系统实时性,但导致植物区平均风速增大,对植物观察造成影响。经分析得出结论:单热风机放置于培养箱底面中心位置,送风速度1.4m/s是最佳加热方案,最适用于微碳汇研究。
In order to avoid the difference of plant growth and improve the accuracy of the micro carbon sink stud- y, several heating schemes are presented in the paper. Fluent was used to simulate the temperature field of incubator under different situations, the relationships between temperature field uniformity in the plant area and the position, the number and the air supply velocity of air heater at different target temperatures were analyzed, and the best heat- ing scheme were found. The results show that the uniformity of temperature field in the plant area with single air heat- er is better than that of the double air heater, but the real time performance is poor; the temperature field uniformity in the plant area and the real time performance of the system can be improved by increasing the air velocity of the air heater, but at the same time, the mean wind speed of the plant area will be increased, which can affect the observa- tion of the plant. It is concluded that when single air heater placed in the center of the bottom of the incubator, the air supply velocity 1.4m/s is the best heating scheme, which is most suitable for micro carbon sink study.
出处
《计算机仿真》
北大核心
2018年第2期205-210,共6页
Computer Simulation
基金
国家自然科学基金(31470714)
关键词
微碳汇
培养箱
温度场
均匀性
Micro carbon sink
Incubator
Temperature field
Uniformity
