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고분자 전해질 연료전지 내의 물질 이동 및 온도 분포의 3차원 해석
강철민(Chulmin Kang),심현우(Hyunwoo Sim),안동진(Dongjin An),김영배(Youngbae Kim) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.5
In this paper a three-dimensional computational fluid dynamic model of a proton exchange membrane cell(PEMFC) with straight flow channel is presented. The development of physically representative models that allow reliable simulation of the processes under realistic conditions is essential to the development and optimization of fuel cells. Full three-dimensional, multiphase, non-isothermal computational fluid dynamics models of airflow-channel PEM fuel cell have been developed. These comprehensive models account for the major transport phenomena in these types: convective and diffusive heat and mass transfer, electrode kinetics, transport and potential fields. The models are shown to understand the many interacting, complex electrochemical, and transport phenomena that cannot be studied experimentally. The major purpose of this study is to develop a three-dimension CFD model that can predict effects of operating potential and is to expect operation temperature distribution, flow rate, performance, local current density distribution and mass transportation through computing analysis.
안동진(Dongjin An),강철민(Chulmin Kang),심현우(Hyunwoo Sim),김영배(Youngbae kim) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.5
A two-dimensional, transient model has been developed to study the transient dynamics of a Polymer Electrolyte Membrane fuel cell (PEMFC) operation. Various time constants are estimated for the important transient phenomena of electrochemical reaction. A transient model analysis is divided into three parts; First, it analyzed time variation of oxygen weight fraction. Second, it analyzed distribution of temperature and time variation of temperature. Third, it analyzed distribution of saturation and time variation of saturation. In addition, it analyzed change of current density and saturation for various electric potential. COMSOL multiphysics is used to analyze a two-dimensional, transient PEMFC model.