摘要
The real gas effect is dominant at high pressure and low temperature, and it is modeled by complex equations of state other than perfect gas law. In the vicinity of liquid-vapor critical point, the real gas exhibits unusual gas dynamic behavior. In the present work, a transient wave fields in unilateral opening pulse tube is simulated by solving the Navier-Stokes equations incorporated with the Peng-Robinson thermodynamic model. The computational fluid dynamics （CFD） results show a remarkable deviation between perfect gas model and real gas model for contact interface and shockwave. The wave diagram based on the real gas model can help to solve the problem of offset design point.
真实煤气的效果在高压力和低温度是主导的，并且它被除完美的煤气的法律以外的状态的复杂方程建模。在液体蒸汽的附近批评的点，真实气体展出不平常的气体动态行为。在现在的工作，一个短暂波浪在单方的空缺脉搏试管回答被解决与 Peng-Robinson 热力学的模型一起合并的海军司烧方程模仿。计算液体动力学(CFD ) 结果为接触接口和冲击波显示出在完美的煤气的模型和真正的煤气的模型之间的显著偏差。基于真实气体，模型能帮助解决偏移量设计点的问题的波浪图。
