Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Uncertainty Assessment Using Monte Carlo Simulation in Gas Flow Measurement

기체 유량 측정에서 몬테 카를로 모사를 이용한 측정불확도 평가

  • 이대성 (한국항공우주연구원 항공기술실) ;
  • 양인영 (한국항공우주연구원 항공기술실 항공추진그룹) ;
  • 김춘택 (한국항공우주연구원 항공기술실 항공추진그룹) ;
  • 양수석 (한국항공우주연구원 항공기술실 항공추진그룹)
  • Published : 2003.12.01
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Abstract

Monte Carlo simulation(MC) method was used as an uncertainty assessment tool for gas flow measurement in this paper. Uncertainty sources for gas flow measurement were analyzed, and probability distribution characteristics of each source were discussed. Detailed MC methodology was described including the effect of the number of simulation. The uncertainty result was compared with that of the conventional sensitivity coefficient method, and it was revealed that the results were different from each other for this particular gas flow measurement case of which the modelling equation was nonlinear. The MC was comparatively simple, convenient and accurate as an uncertainty assessment method, especially in cases of complex, nonlinear measurement modelling equations. It was noted that the uncertainty assessment method should be selected carefully according to the mathematical characteristics of the measurement.

Keywords

References

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