Description

The present simulation is about airflow around an aircraft via ANSYS Fluent. In this simulation, an aircraft is designed inside the computational zone filled with airflow. The airflow travels towards the aircraft at 100 m.s^-1 and hits its fuselage. This project aims to investigate the pressure on the fuselage and the profile of changes in velocity and pressure around the fuselage.

The present geometry is designed in a 3D model via Design Modeler. A giant cubic computational zone is designed to define airflow, and an aircraft is modeled within this computational zone. The mesh of the present model has been done via ANSYS Meshing. Mesh is done unstructured, and the number of production cells is equals 3,190,893

Methodology

In this model, an airplane situated within a computational domain filled with moving air is considered. The air, moving at a speed of 100 m/s, is directed towards the airplane, making contact with its main body. This simulation is done steadily and with pressure-based solver because of the incompressible air flow. The effect of gravity is ignored and the turbulence of the flow is simulated via SST k-omega model.

Conclusion

After calculation, 2D and 3D contours related to pressure and velocity are obtained. The contours show significant pressure and velocity changes appearing around the fuselage.

The pressure contours show that the maximum pressure is exerted on the front of the aircraft, and the velocity contours indicate that a separation zone is created on the aircraft's rear. Also, the drag force on the aircraft equals 16916.279 N, and the lift force on the aircraft is equal to 104220.68 N.