Savonius rotors are extensively studied for their potential applications in renewable energy. Both practical experiments and computational techniques can be utilized to simulate Savonius rotors. Prior investigations have highlighted the use of ANSYS Fluent in simulating Savonius rotors. This numerical study delves into comprehending the airflow dynamics surrounding the Savonius rotor using ANSYS Fluent. In fact, it is crucial to comprehend airflow behavior before suggesting methods to enhance power output. Employing ANSYS Fluent, the airflow characteristics, especially around the rotor, are unsteadily simulated. Special attention was given to velocity magnitude and pressure distributions. Comparative analysis with experimental data revealed good agreement, affirming the reliability of the computational model, such as the choice of time step, meshing, and turbulence model. These findings contribute significantly to enhancing the design of Savonius rotors for various applications.