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소닉노즐의 유량측정 불확도 평가

최해만;박경암;최용문
Choe, Hae-Man;Park, Gyeong-Am;Choe, Yong-Mun

  • 발행 : 2001.12.01

초록

Measurement uncertainty should be evaluated according to ISO/IEC 17025. In Flow measurement area, uncertainty evaluation scheme was applied to the reference flow meter, sonic nozzle. Uncertainty was calculated by evaluating various uncertainty factors affected in flow measurement. The expanded uncertainty(U) of the sonic nozzle was 2.1$\times$ 10$^{-3}$ (confidence level of 95 %). This evaluation example will be useful in flow measurement uncertainty determination of other flow meters.

키워드

소닉노즐;불확도

참고문헌

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  5. 최용문, 박경암, 차지선, 최해만, 윤복현, 2000, '음속노즐의 임계 압력비에 대한 저 레이놀즈수의 영향,' 대한기계학회 논문집 B권, 제24권, 제11호, pp. 1535-1539
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