Fluid flow analysis of an axial fan is challenging because the blade shape significantly affects performance. Accurate geometry representation and grid generation is critical. Starting from CAD data, SC/Tetra's automatic mesh generator can create the computational mesh in a matter of hours. In contrast, most conventional CFD software will require weeks to create the mesh. SC/Tetra simulates rotating blades using the rotating boundary (ALE) function. In addition, SC/Tetra perform a preliminary steady state analysis using only blade rotating forces.