Turbulence characteristics of large factory building and its influence on airship transport process

Abstract

Aiming at the problem that the stability of airship’s posture is destroyed by turbulent flow when the airship leaves the large factory building, a Computational Fluid Dynamics (CFD) numerical simulation method is used to analyse the characteristics of large factory building disturbance under different inflow angles. The transport process of airship is simulated, and the equivalent force and moment of airship in variation with transport distance are acquired. The results show that the wind field changes along the transport path of the airship, which makes the equivalent force and moment acting on the airship body center fluctuate. In 60 degrees of the incoming flow, compared with other inflow angles, the turbulence at the exit of large factory building is severe, and the distance affected by the turbulent flow of large factory building is shorter, and the equivalent force and moment acting on the airship body center are larger in the process of airship transport. The simulation results provide an effective reference for the safety of airship transport process.