PEMFC 가스채널 내의 액적-액적 상호작용에 대한 수치모사
Numerical Simulation of Liquid Droplet-Droplet Interaction in a PEMFC Gas Channel
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초록
The dynamic interaction of liquid droplets emerging from the gas diffusion layer surface is modeledto study the behavior of liquid water inside the gas channel of a polymer electrolyte membrane fuel cellwith the volume of fluid formulation(VOF). The surface contact angle of gas diffusion layer is varied as45, 90, and 140 degrees. The gas channel air inlet velocity is varied as 5, 10, and 15 m/s. The waterinlet velocity from micro pores is varied as 0.5, 1, and 2 m/s. As the contact angle increases, watercoverage ratio increases. As the air inlet velocity and the water inlet velocity increase, water dropletsmove faster toward the channel exit as evidenced from the water front location plots. In summary, thehydrophobic wall contact angle and higher air/water inlet velocities provide better water removalcharacteristics.
Abstract
The dynamic interaction of liquid droplets emerging from the gas diffusion layer surface is modeledto study the behavior of liquid water inside the gas channel of a polymer electrolyte membrane fuel cellwith the volume of fluid formulation(VOF). The surface contact angle of gas diffusion layer is varied as45, 90, and 140 degrees. The gas channel air inlet velocity is varied as 5, 10, and 15 m/s. The waterinlet velocity from micro pores is varied as 0.5, 1, and 2 m/s. As the contact angle increases, watercoverage ratio increases. As the air inlet velocity and the water inlet velocity increase, water dropletsmove faster toward the channel exit as evidenced from the water front location plots. In summary, thehydrophobic wall contact angle and higher air/water inlet velocities provide better water removalcharacteristics.
참고문헌 (12)
- R. O'Hayre, "Fuel Cell Fundamentals" (2006), John Wiley & Sons Inc
- 배중면, "전산해석을 통한 고분자 전해질 연료전지 내 입구 가습조건의 영향에 관한 연구", 대한기계학회논문집 B, 30(12), pp.1228~1235 (2006), 대한기계학회
- W. Yuan, "Model Prediction of Effects of Operating Parameters on Proton Exchange Membrane Fuel Cell Performance", Renewable Energy, 35(3), pp.656~666 (2010)
- X. Liu, "Water Flooding and Pressure Drop Characteristics in Flow Channels of Proton Exchange Membrane Fuel Cells", Electrochimica Acta, 52(11), pp.3607~3614 (2007)
- 제우성, "연료전지용 공기공급기의 케이스 변형량 해석 및 개선설계", 한국기계기술학회지, 13(4), pp.43~48 (2011), 한국기계기술학회
- E. Mancusi, "Numerical Study of Two-Phase Flow Patterns in the Gas Channel of PEM Fuel cells with Tapered Flow Field Design", International Journal of Hydrogen Energy, 39(5), pp.2261~2273 (2014)
- Y. Ding, "Three-Dimensional Numerical Simulation of Water Droplet Emerging from a Gas Diffusion Layer Surface in Micro-Channel", Journal of Power Sources, 195(21), pp.7278~7288 (2010)
- X. Zhu, "Three-Dimensional Numerical Simulations of Water Droplet Dynamics in a PEMFC Gas Channel", Journal of Power Sources, 181(1), pp.101~115 (2008)
- B. Han, "Lattice Boltzmann Simulations of Liquid Droplets Development and Interaction in a Gas Channel of a Proton Exchange Membrane Fuel Cell", Journal of Power Sources, 202, pp.175~183 (2012)
- ANSYS Inc, "ANSYS FLUENT User`s Guide Release 13.0", ~ (2010)
- 조재혁, "기공률, 상대습도, 전기전도도 변화에 따른 고분자 전해질 연료전지 성능해석", 한국기계기술학회지, 15(1), pp.103~108 (2013), 한국기계기술학회
- 조재혁, "작동압력, 작동온도 변화에 따른 고분자 전해질 연료전지 성능해석", 한국기계기술학회지, 15(2), pp.247~253 (2013), 한국기계기술학회