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

The Korean Society of Mechanical Engineers (대한기계학회)
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Transient Heat Transfer in Porous Media under Oscillating Flow Condition

왕복유동조건에서 다공성 물질의 비정상 열전달

  • Byeon, Su-Yeong (Dept.of Mechanical Engineering, Graduate School of Seoul National University) ;
  • Lee, Dae-Yeong (Heat Flowing Control Research Center, Korea Institute of Science and Technology) ;
  • No, Seung-Tak (Seoul National University)
  • 변수영 (서울대학교 대학원 기계공학부) ;
  • 이대영 (한국과학기술연구원 열유동제어연구센터) ;
  • 노승탁 (서울대학교 기계공학부)
  • Published : 2001.03.01
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Abstract

An analytical characterization is presented on the transient heat transfer by an oscillating flow through a porous slab. Based on a two-equation model, analytic solutions are obtained for both the fluid and solid temperature variations. Two parameters are identified as the Stanton number for the internal heat exchange and the ratio of the thermal capacities between the solid and fluid phases. The heat transfer characteristics are shown to be classified into four regimes according to the two parameters and physical interpretation is presented on the particular heat transfer processes within each regime. In addition, the condition for the local thermal equilibrium between the phases is examined and the relevant criterion is suggested.

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References

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