대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)

대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

발포 금속 내 공기 유동 및 압력강하에 관한 시뮬레이션

The Simulation about the Air Flow and Pressure Drop inside the Metal Foam

  • 김필환 (경상대학교 기계항공공학부, 정밀기계공학과, BK21 친환경냉열에너지 기계연구사업팀) ;
  • 김미화 (경상대학교 기계항공공학부, 정밀기계공학과, BK21 친환경냉열에너지 기계연구사업팀) ;
  • 장석준 (경상대학교 기계항공공학부, 정밀기계공학과, BK21 친환경냉열에너지 기계연구사업팀) ;
  • 정한식 (경상대학교 기계항공공학부, 정밀기계공학과, BK21 친환경냉열에너지 기계연구사업팀) ;
  • 정효민 (경상대학교 기계항공공학부, 정밀기계공학과, BK21 친환경냉열에너지 기계연구사업팀)
  • Kim, Pil-Hwan (Department of Mechanical and Precision Engineering, school of mechanical and aerospace engineer Eco-Friendly Heat & Cold Energy Mechanical Research Team, BK21) ;
  • Jin, Mei-Hua (Department of Mechanical and Precision Engineering, school of mechanical and aerospace engineer Eco-Friendly Heat & Cold Energy Mechanical Research Team, BK21) ;
  • Jang, Seok-Jun (Department of Mechanical and Precision Engineering, school of mechanical and aerospace engineer Eco-Friendly Heat & Cold Energy Mechanical Research Team, BK21) ;
  • Chung, Han-Shik (Department of Mechanical and Precision Engineering, school of mechanical and aerospace engineer Eco-Friendly Heat & Cold Energy Mechanical Research Team, BK21) ;
  • Jeong, Hyo-Min (Department of Mechanical and Precision Engineering, school of mechanical and aerospace engineer Eco-Friendly Heat & Cold Energy Mechanical Research Team, BK21)
  • 발행 : 2008.06.25
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초록

Porous medium was considered in the present study for the heat transfer enhancement. This was attributed to its high surface area to volume ratio as well as intensive flow mixing by tortuous flow passages. But when the air or water flow through in the porous medium, it is occurred the pressure drop between inlet and outlet. So in the present study investigated simulation result about the pressure drop in the porous medium before apply to heat exchanger. In this simulation, the thickness of the solid inside the porous medium region was varied 0.2 mm to 0.4 mm. And then the simulation result were compared the pressure drop in the same unit cell ($0.5\;mm{\times}0.5\;mm{\times}0.5\;mm$). To make the analysis model, it was assumed the 14-sided tetrakaidecahedron cell which has long been considered the optimal packing cell first proposed by the Lord Kelvin in 1887. And then the simulation is carried out using by STAR-CCM+ which is commercial software. The simulation result can be showed quantified pressure drop by solid effect in the porous medium.

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