Aircraft icing is a phenomenon in which shape and features of the surface of aircraft components change. Therefore, aerodynamic characteristics of the aircraft such as lift and drag forces changes as the flow passes over iced surfaces. Icing has always destructive effects on drag and lift forces so the overall performance of aircraft will deteriorate. Moreover, icing would impact on stability and control of the aircraft. Simulation of aircraft icing is of great importance to investigate the flow field and its effects on aerodynamic characteristics. CFD simulations would help you reduce your design and construction costs and the future failures in the aircraft systems. ANSYS has provided necessary professional computational tools for the simulation of aircraft icing.