Axial fans are extensively used in industries for various applications such as mine ventilation, air conditioning system, heat exchangers, and so forth. In the view of low head produced by an axial flow impeller, drag acquires greater importance in axial flow impellers than that of centrifugal and mixed flow impellers. The axial fan performance strongly linked to aerodynamic properties of the blades, so the main objective is to analyze the fluid flow through an axial fan impeller with aerofoil cross-section. This project work presents the Modeling and CFD (Computational Fluid Dynamics) analysis of 2-D and 3-D flow field through an axial flow fan rotor. The aim of the project is to find the aerodynamic performance and analysis of fluid flow through an axial flow fan. The main purpose of this work is to analyze the nature of fluid flow through an axial flow fan at designed and off designed conditions using turbulence model. Here, k-turbulence model is used for CFD analysis.