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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

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

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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