Abstract
Abstract The ventilation behaviour of greenhouse structures when the wind speed is low and the “buoyancy effect” is the main driving force of the indoor air flow has been analysed with the use of Computational Fluid Dynamics. These numerical (CFD) simulations offer a detailed picture of the temperature spatial distribution and the air velocity field. These data can be used for analysing the contribution of every ventilator to the general ventilating performance of the greenhouse. As an example, the great importance of both roof and side ventilators for an efficient thermally driven ventilation was numerically demonstrated.
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