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

  • 제27권8호
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  • Pages.1114-1121
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  • 2003
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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난류 유동 하에서 덕트 내의 착상

Frost Formation in a Straight Duct under Turbulent Flow

  • 양동근 (한양대학교 대학원 기계공학과) ;
  • 이관수 (한양대학교 기계공학부)
  • 발행 : 2003.08.01
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초록

A mathematical model considering the air side and the frost layer is presented to predict the frost layer growth. The standard k-$\varepsilon$ model for the air flow and the diffusion and energy equations for the frost layer are employed. The numerical results are compared with experimental data to validate the present model, and agree well with experimental data within a maximum error of 10%. The present model predicts well the frost properties and heat and mass transfer with respect to the frosting time. The variation of total heat transfer strongly depends on the operating condition, and has a similar trend to that of the sensible heat transfer. The frost properties along the flow direction are also investigated.

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참고문헌

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