Since the first developments around spray drying in 1870, multiple contributions have been made to obtain design parameters that have led to heuristics. However, experimental studies are required to design and build spray drying equipment for specific applications. From the heuristics reported in books, catalogues and patents, the dimensions and operating conditions have been selected to execute the mathematical modeling of a spray dryer with different models, starting from a relatively simple model of single-phase incompressible flow, to a more complex model that contemplates multiphase flow. This study shows the preliminary results obtained for the simulation of a cocurrent spray drying system using the CFD software OpenFoam.