AGRIST Inc.
Thermal environment analysis inside a greenhouse
By simulating the thermal environment inside a greenhouse and visualizing the temperature and wind speed variations inside the greenhouse, we can optimize the selection and placement of equipment.
Exterior of the greenhouse
Model of equipment layout inside a greenhouse
Various conditions
- Perform calculations during the day (with solar radiation) and at night (without solar radiation, with heater).
-The setting assumes that the warm air from the heater comes out directly from the bottom of the warm air duct at a constant volume and temperature.
-Solar radiation heat is generated only on the ground using OpenFOAM's solar radiation function.
(Surfaces other than the ground do not directly receive heat from sunlight.) Radiation must also be taken into account.
- The solar transmittance of the vinyl is not taken into account (the vinyl is set to transmit all solar radiation)
- Circulate the air inside the greenhouse with a circulation fan.
Streamline diagram of air blown out from a circulation fan
Color bar indicates flow velocity [m/s]
Detail of technology
-The solver used is chtMultiRegionFoam.
・Radiation is solarLoad model.