고분자 전해질 연료전지 사다리꼴 단면 가스채널 내에서의 물 배출 특성에 대한 수치해석 Numerical Analysis of Liquid Water Removal Characteristics in a PEMFC Gas Channel with Trapezoidal Cross-section
한국기계기술학회지
(韓國機械技術學會誌)
제19권 제1호
(2017.02)
pp.40-45
pp.40-45
한국기계기술학회
(Korean Society of Mechanical Technology)
초록
The water removal characteristics in a PEMFC trapezoidal gas channel are investigated with the volume of fluid (VOF) method. For the case of wall contact angle of 60 degree, liquid water attaches on the top wall and moves toward the exit. In contrast, liquid water moves along the channel side corner or GDL surface irregularly for the higher wall contact angles. The hydrophillic wall contact angle of 60 degrees provides more favorable diffusion of reactants to cathode reaction sites as the GDL surface water coverage ratio approaches zero even if the water flow rate increases.
저자