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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (3): 789-796.doi: 10.7527/S1000-6893.2014.0186

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Criterion of selective simulation parameters for hypersonic aerodynamic test

WANG Gang, YANG Yanguang, TANG Zhigong   

  1. Hypervelocity Aerodynamic Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2014-04-10 Revised:2014-08-14 Online:2015-03-15 Published:2015-03-31

Abstract:

Validity issue on simulation criterion for hypersonic aerodynamic test has hindered the development of ability on aerodynamic performance prediction for hypersonic aircraft. Scaling method is applied in the field of experimental aerodynamics within continuous flow regime. Various parametric scales are selected due to dual scale of flow characteristics and different parameters are applied to scaling the equation. Based on the assessment of the order of magnitude for each parameter, the simulation parameter and its weight are obtained for typical flight conditions. Results indicate that the analytical method supports the existing criterion of selective simulation parameters and provides suggestions to improve the simulation criterion. What is more, this paper illustrates that selective simulation parameters vary significantly as flight environment changes, and the ranking of simulation parameters is given by various flight conditions. By applying theoretical method, it is verified that viscous interaction parameter is one of the most significant simulation factors for hypersonic aerodynamic test, which coincides with conclusions of scholars abroad.

Key words: simulation parameters, scaling method, aerodynamic test, hypersonic, viscous interaction, wind tunnel test

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