Abstract
In order to study the effects of low-temperature real gas effects and Reynolds number effects on the aerodynamic characteristics of typical transport aircraft, in this paper we developed a RANS simulation software suitable for simulating the low-temperature and high-pressure real gas effects of nitrogen based on the ARK equation. CHNT-1 was used as the standard model for calculation, and the reliability of the program calculation results was verified by comparing them with the experimental results at room temperature. The calculation results under different Reynolds numbers at low temperatures show that within the range of pressure and temperature involved, the effect of real gas on the aerodynamic characteristics of the transport machine is very small, and can be ignored compared to the effect of Reynolds numbers. The experimental study of low-temperature wind tunnels using nitrogen as the medium can adopt the perfect gas hypothesis.
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