Numerical Analysis of the Natural Ventilation in a Greenhouse under Saharan Climate Conditions

This study aims to numerically model the natural laminar ventilation of the microclimate of a solar greenhouse. The distribution of air temperature and air velocity inside the solar greenhouse was studied numerically using ANSYS FLUENT software. The influence of the temperature difference on the air velocity filed and the temperature filed inside the greenhouse, skin friction coefficient were studied. The results indicate that heating the soil of the solar greenhouse affects the heat flux and its coefficient by increasing the temperature difference. The results also showed that natural ventilation is able to passively control the climate in the solar greenhouse.