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Inner Mongolia Agricultural University (内蒙古农业大学) 2021

Study and Numerical Simulation of Soil Hydrothermal Content in Double Membrane Greenhouse in Arid and Cold Area of North China

高理君

Titre : Study and Numerical Simulation of Soil Hydrothermal Content in Double Membrane Greenhouse in Arid and Cold Area of North China

Auteur : 高理君

Grade : Master 2021

Université : Inner Mongolia Agricultural University (内蒙古农业大学)

Résumé partiel
Solar greenhouse is the basic facility of protected agriculture.It is widely used in northern China for producing fruits and vegetables through winter with no or little heating.Greenhouse makes up for the shortcoming that the northern region of our country cannot grow fruits and vegetables in winter,and realizes the ability to grow vegetables all the year round "summer vegetables in winter,south vegetables in north" to meet the needs of consumers.It is the most important facility agriculture in the northern region.Soil temperature and humidity in solar greenhouse play a crucial role in crop growth in arid and cold regions of north China.Solar greenhouse is a semi-closed structure,composed of soil-crop-air,each part of its climate is different,but there is a coupling effect.In this thesis,the current figure of Inner Mongolia agricultural university of science and technology park double membrane as the sunlight greenhouse experiment in greenhouse,in the sunlight greenhouse celery crop canopy is studied under different growth height daily variation law of soil temperature,moisture content,as well as the crop canopy formed after day and night the crop canopy internal temperature and humidity and soil moisture content of internal temperature of the spatial distribution characteristics are analyzed,and establish the CFD numerical model,the simulation of crop canopy and soil temperature field at the top and bottom.

Mots clés : Solar Greenhouse ;Soil;Thermal characteristics of water ;Crop canopy ;Porous Medium ;Computational Fluid Dynamics ;

Présentation (CNKI)

Page publiée le 22 mars 2022