摘要
The shock tubes with area change are used in the free piston shock tunnels,owing to its higher driver effect.For optimized operation of this kind of shock tube,a computer program for fast simulation of transient hypersonic flow is presented.The numerical modeling embodied within this code is based on a quasi-one-dimensional Lagrangian description of the gas dynamics.In this code,a mass-loss model is also applied by using Mirels′theory of shock attenuation.The simulation of particular condition for T4 free piston shock tunnel is conducted and compared with experimental measurements and numerical simulation.The results provide good estimate for shock speed and pressure obtained after shock reflection.
The shock tubes with area change are used in the free piston shock tunnels, owing to its higher driver effect. For optimized operation of this kind of shock tube, a computer program for fast simulation of transient hy- personic flow is presented. The numerical modeling embodied within this code is based on a quasi-one-dimensional Lagrangian description of the gas dynamics. In this code, a mass-loss model is also applied by using Mirels＇ theory of shock attenuation. The simulation of particular condition for T4 free piston shock tunnel is conducted and com- pared with experimental measurements and numerical simulation. The results provide good estimate for shock speed and pressure obtained after shock reflection.
