| Title |
Numerical Analysis of Melting Process in a Water Tank for Fuel-cell Vehicles |
| Authors |
김학구(Hark-Koo Kim) ; 정시영(Siyoung Jeong) ; 허남건(Nahmkeon Hur) ; 임태원(Taewon Lim) ; 박용선(Yong-Sun Park) |
| Keywords |
연료전지 자동차 ; 냉시동 ; 융해 ; 엔탈피 방법 ; 상변화 Fuel cell vehicles ; Cold start ; Melting ; Enthalpy method ; Phase change |
| Abstract |
Good cold start characteristics are essential for satisfactory operation of fuel cell vehicles. In this study, the melting process has been numerically investigated for a water tank used in fuel cell vehicles. The 2-D model of the tank containing ice and plate heaters was assumed and the unsteady melting process of the ice was calculated. The enthalpy method was used for the description of the melting process, and a FVM code was used to solve the problem. The feasibility study compared with other experiment showed that the developed program was able to describe the melting process well. From the numerical analysis carried out for different wall temperatures of the pate heaters, some important design factors could be found such as local overheating and pressurization in the tank. |