Journal of Advanced Marine Engineering and Technology

  • 제39권4호
  • /
  • Pages.368-373
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  • 2015
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
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가솔린 기관의 도시성능 예측을 위한 시뮬레이션: GT-POWER를 이용한 경우

Simulation for the Prediction of Indicated Performances of a Gasoline Engine Using GT-POWER

  • Choi, Won-Jeong (Consolidated Maintenance Depot, Army) ;
  • Ryu, Soon-Pil (Industrial-Academy Cooperation, Changwon National University) ;
  • Yoon, Keon-Sik (Department of Naval Architecture and Marine Engineering, Changwon National University)
  • 투고 : 2015.01.22
  • 심사 : 2015.04.30
  • 발행 : 2015.05.31
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초록

향후 박용기관의 일정 부분은 LNG 또는 합성가스를 사용한 Gas Engine으로의 이행이 예상되고 있으며 이에 대한 선행연구로서 SI기관의 시뮬레이션에 대한 연구가 요구된다. SI기관의 도시성능 예측을 위하여 상용 성능해석 소프트웨어인 GT-POWER를 이용한 모델링을 시도하였다. 이를 위해 흡 배기 계통의 모델링은 기존 연구에서 최적화된 모델링을 적용하였다. 연소과정 모델링과 열전달과정 모델링에 있어서는 현장에서 가장 적용이 용이한 모델인 SI Wiebe 연소모델과 Modified Woschni 열전달 모델을 적용하였다. 여러 운전조건에서 크랭크 각에 따른 연소실 압력 변화와 최고압력 및 도시평균유효압력 등의 계산결과를 실험결과와 비교한 결과 양자가 잘 일치함을 확인하였다.

As a preliminary study for the development of the gas fueled marine engine, prediction of indicated performances was carried out for a spark-ignition engine using commercial software, GT-POWER. The optimized models through a previous study were applied for the simulation of the intake and exhaust systems in a SI engine. The Spark-Ignition Wiebe model was used to calculate the burn rate in the cylinders and the modified Woschni model was used to calculate the heat transfer to the walls. The predicted performances, such as air delivery, cylinder pressures and indicated mean effective pressures under a range of operating conditions showed good agreement with the experiments.

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참고문헌

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  3. Gamma Technologies, GT-POWER User's Manual version 6.2, Gamma Technologies, pp. 24-27, 56-57, 59-60, 2006.
  4. J. S. Kim, K. S. Yoon, and S. K. Woo, "Study on the modeling of the intake and exhaust systems of an SI engine using GT-POWER," Journal of the Korea Society of Marine Engineering, vol. 35, no. 6, pp.779-785, 2011. https://doi.org/10.5916/jkosme.2011.35.6.779
  5. I. Wiebe. Semi-empirical formula for the burn rate in fuel supply and burning in diesel engine, Springer-Publisher,1964 (in German).
  6. G. Woschni. "A universal applicable equation for the instantaneous heat transfer coefficient in the internal combustion engine," SAE 670931, 1967.
  7. S. K. Woo, A Study on the Simulation of the 4-Stroke Cycle Spark Ignition Engine, Ph. D. Dissertation, Changwon National University, Korea, 2001.