Abstract
To evaluate the microclimate inside an agricultural greenhouse, the Ansys Fluent R16.0 Computational Fluid Dynamic (CFD) code was used for a 2D simulation of transport phenomena like heat transfer and radiation for three Rayleigh number values using the finite volumes method. The daily variation of external solar radiation was introduced via User Defined Functions (UDF) to modulate solar radiation using the Discrete Ordinates (DO) model. In the current study, the flow was simulated in the steady case and the plants were not considered. During simulation, both cases were tested day and night. The obtained results corroborate with the literature and its confrontation was satisfactory. This work should make it possible to improve the thermal performances of greenhouses by a better positioning of heating and ventilation systems.
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