Scale Adaptive Simulation Modeling Of Pressure On Seat Occupant System

Three dimensional models for seat occupant system are established using the Navier-Stokes equations with the Scale Adaptive Simulation turbulence model. The results of numerical simulation agree well with the wind tunnel experiment ones that Mach number 0.6 and pitch angles varied from -90 degrees to 90 degrees. And on this basis the flow around seat occupant system without protection is simulated, the injury mechanism of occupant during high speed ejection is investigated based on the force acted on human body. The results show that the high pressure zones located on face, neck, chest, abdomen, medial upper arm and windward side of calves; as the pitch angle increases, the pressure distribution of each part can improve. This investigation will be helpful to the shooting escape of occupants and the design of windblast protecting devices.