Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Numerical Simulation on the Temperature and Moisture Fields of Shallow Soil in Solar Greenhouse
DOI:
10.16355/j.cnki.issn1007-9432tyut.2020.02.020
Received:
Accepted:
| Corresponding author | Institute | |
| DU Zhenyu | College of Environmental Science and Engineering,Taiyuan University |
abstract:
To investigate the temperature and moisture fields of shallow soil in solar greenhouse, a mathmatical model was built up and used to simulate the dynamic temperature and moisture of shallow soil in solar greenhouse. The results show that the soil temperature and moisture changes at different depths had the same trend, showing periodic changes with time; with the increase of soil depth, the amplitude of temperature and moisture wave decreases gradually, and the delay degree increased gradually; 50 cm-deep soil layer temperature and moisture remained constant; the initial volumetric moisture content of the soil was inversely proportional to the soil layer temperature gradient; according to the variation of temperature and moisture gradient of shallow soil in different depths,the soil layer of 0 ～100 cm was divided into three characteristic layers: variable layer, slow change layer and uniform stability layer.
Keywords:
solar greenhouse; soil temperature field; soil moisture field; shallow soil;