The indirect solar dryer is one of the technologies used to dehydrate moist products. This technique allows for preserving the cleanliness of the dry fruits as well as their color and nutritional value. Moreover, this method of drying is based on the exploitation of renewable energy, which is solar energy. For this reason, the improvement of the indirect drying system has become a necessity. In this work, a comparative study has been carried out focusing on the modeling of drying trays in an indirect solar dryer using the CFD method as an approach to the studied system. The study is based on the two techniques of modeling the trays, which are widely used in the literature; either solid zone trays (SZT) or porous medium trays (PMT). The results were obtained to analyze the difference between the two techniques used at the level of the general distribution of airflow in the drying chamber and exactly at the level of the drying trays from the thermal and dynamic points of view.