Journal of Advanced Marine Engineering and Technology

  • 제37권3호
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  • Pages.282-290
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  • 2013
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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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CO concentration distribution in a tunnel model closed at left end side using CFD

  • Peng, Lu (School of Mechanical Design Engineering, Graduate School, Chonnam National University) ;
  • Lee, Yong-Ho (School of Mechanical Design Engineering, Chonnam National University)
  • 투고 : 2013.02.07
  • 심사 : 2013.05.13
  • 발행 : 2013.05.31
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초록

A primary air pollutant as an indicator of air quality released from incomplete combustion is Carbon monoxide. A study of the distributions of CO concentration with no heat source in a tunnel model closed at left end side is simulated with a commercial CFD code. The tunnel model is used to investigate the CO concentration distributions at three Reynolds numbers of 990, 1970, and 3290. which are computed by the inlet velocities of 0.3, 0.6 and 1.0 m/s. The CFD predictive approaches can be useful for a better design to analyze the distributions of CO concentrations. In the case of the tunnel model closed at left end side alone, the concentration changes of x/H=-5 and -2.5 have the similar laminar characteristics like the case of the tunnel model closed at both end sides expecially at low values of Reynolds number. Irregular average CO concentration variations at Re=1790 are considered that the transition from laminar to turbulent flow occurs even in three different tunnel models.

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참고문헌

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