Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Test Research Using an IR Thermography Technique in a Supersonic Wind Tunnel

초음속 풍동에서의 IR Thermography 기법을 활용한 시험연구

  • Received : 2015.08.05
  • Accepted : 2015.12.30
  • Published : 2016.02.01
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Abstract

Test research on Infra-Red Thermography(IRT) technique in a supersonic wind tunnel has been conducted. Inadvertent technical difficulties and their solutions associated with the technique in running of the facility were examined. Two flow conditions at Mach number of 3 and 4 were considered. A double compression ramp model, that replicates realistic high-speed vehicle configuration, was used as test model. The present IR data were compared with shadowgraph visualization images and laminar computational fluid dynamics(CFD) results. It has been shown that the IRT technique can be used in quantifying various fluid dynamic features such as flow transition, separation and three-dimensional phenomena around the double compression ramp model.

본 연구에서는 Infra-Red Thermography(IRT) 기법을 활용한 초음속 풍동시험 시 의도치 않게 발생하는 기술적 문제에 대한 연구를 수행하였으며 이를 방지할 수 있는 방법에 대해 분석하였다. 풍동시험은 마하 3 또는 4의 두 가지 유동조건에서 초고속 비행체 형상을 모사할 수 있는 이중 압축램프 모델로 수행하였다. 획득된 IR 결과를 shadowgraph 가시화 이미지, 수치해석 결과와 비교하였으며 본 IRT 기법을 활용하여 초음속 이중 압축램프에서 발생하는 유동천이, 박리 그리고 3차원 현상에 관한 정성적인 정보를 획득할 수 있음을 확인하였다.

Keywords

References

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