1. 제  목 : Tortuosity in two-phase close-celled porous media

2. 연  사 : Prof. Tongbeum Kim (Wits University, Johannesburg)

3. 일  시 : 2013년 1월 4일 14:00~15:30

4. 장  소 : 301동 1409호

5. 내  용 : 
  An analytical model capable of demonstrating the dependence of tortuosity of two-phase porous media upon two topological parameters: porosity and pore shape is presented. Based on a generalized effective thermal conductivity model and a particular solution to the Laplace heat conduction equation for two-phase porous media having randomly-distributed non-conducting circular pores, an analytical model of tortuosity is derived. For non-circular pores such as idealized polygonal pores, the circularity-based concept of pore shape factor is incorporated into the model, which is capable of analytically unifying existing models which are valid only for limited porosity ranges and circular pore shapes.

6. 연사약력 
  Dr. Kim is Eskom Chair Professor of Mechanical Engineering in the School of Mechanical Engineering, University of the Witwatersrand, Johannesburg, South Africa (PhD (Cambridge), MSc (Georgia Tech), BEng (Kyung-Hee)). Dr. Kim received a Best Paper Award from UK National Heat Transfer Committee (09/2003) and an Outstanding Reviewer Award from the ASME Journal of Heat Transfer (11/2012).

7. 문  의 : 기계항공공학부 송성진 교수 (☏ 880-1701)