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

  • 제35권8호
  • /
  • Pages.714-719
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  • 2007
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  • 1225-1348(pISSN)
  • /
  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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적외선 카메라를 이용한 압축성 고속 충돌 제트에서의 단열 벽면 온도 특성 연구

Measurement of Adiabatic Wall Temperature in Compressible High Speed Impinging jets using Infra-red Camera

  • 발행 : 2007.08.31
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⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 적외선(Infra-Red) 카메라를 이용하여 원형 노즐을 통한 고속 제트 분사 시 수직 충돌 벽면에서 나타나는 정상상태(steady state)의 단열 벽면 온도를 2차원적으로 측정하였다. 출구 노즐 직경으로 표현된, Reynolds 수 187,000에서 노즐-평판간 거리 변화의 영향을 살펴보았으며, 측정된 단열 벽 온도는 회복 계수로 무차원화 하였다. 한편 열전대를 이용하여 측정한 단열 벽면 온도를 적외선 카메라를 이용한 측정 결과와 비교하여 검증하였다.

In this paper, we report experimental investigations on measurement of adiabatic wall temperature on a flat 2-D plate of high-speed impinging jet made by circular-shape nozzle at steady state condition using infra-red camera. Experiments have been conducted for the Reynolds number of 187,000 according to the change of nozzle-to-plate distance. Dimensionless number, recovery factor, has been used to represent the measured adiabatic wall temperature. And we compared the result obtained by using infra-red camera with that obtained by using thermocouple.

키워드

참고문헌

  1. P. J. Lamont and B. L. Hunt, 'The Impingement of Underexpanded, Axisymmetric Jets on Perpendicular and Inclined Flat Plates', Journal of Fluid Mechanics, Vol. 100, 1980, pp. 471-511 https://doi.org/10.1017/S0022112080001255
  2. J. H. Gummer and B. L. Hunt, 'The Impingement of a Uniform Axisymmetric, Supersonic Jet on a Perpendicular Flat Plate', The Aeronautical Quarterly, Vol. 22, 1971, pp. 403-420
  3. R. J. Goldstein, A. I. Behbahani and K. Kieger Heppelmann, 'Streamwise Distribution of the Recovery Factor and the Local Heat transfer coefficient to an Impinging Circular Air Jet', International Journal of Heat and Mass Transfer, Vol. 29, No.8, 1986, pp. 1227-1235 https://doi.org/10.1016/0017-9310(86)90155-9
  4. M. D. Fox, M. Kurosaka, L. Hedges and K. Hirano, 'The Influence of Vortical Structures on the Thermal Fields of Jets', Journal of Fluid Mechanics, Vol. 255, 1993, pp.447-472 https://doi.org/10.1017/S0022112093002551
  5. D. Lytle and B. W. Webb, 'Air Jet Impingement Heat Transfer at Low Nozzle-plate Spacings', International Journal of Heat and Mass Transfer, Vol. 37, No. 12, 1994, pp.1687-1697 https://doi.org/10.1016/0017-9310(94)90059-0
  6. B. N. Pamadi and I. A. Belov, 'A Note on the Heat Transfer Characteristics of Circular Impinging Jet', International Journal of Heat and Mass Transfer, Vol. 23, No.6, 1980, pp.783-787 https://doi.org/10.1016/0017-9310(80)90032-0
  7. B. G. Kim, M. S. Yu and H. H. Chc 'Distribution of Recovery Temperature on a Fla Plate by Underexpanded Supersonic Impingiru Jet', Journal of Thermophysics and Hea Transfer, Vol. 16, No.3, 2002, pp. 425-431 https://doi.org/10.2514/2.6696
  8. B. G. Kim, M. S. Yu and H. H. Cho, 'Recovery Temperature Measurement a Underexpanded Sonic Jets Impinging on a Fla Plate', Journal of Thermophysics and Hea Transfer, Vol. 17, No.3, 2003, pp.313-319 https://doi.org/10.2514/2.6787
  9. 유만선, 김병기, 조형회, 황기영, 배주찬, '수직 축대칭 과소팽창 충돌 제트의 표면 열전달 특성 연구', 한국항공우주학회지, 제33권 제8호, 2005, pp.84-91
  10. A. G. Mills, Basic Heat & Mass Transfer, 2nd Ed., Prentice Hall, New Jersey, 1999, pp. 29-34

피인용 문헌

  1. Test Research Using an IR Thermography Technique in a Supersonic Wind Tunnel vol.44, pp.2, 2016, https://doi.org/10.5139/JKSAS.2016.44.2.99