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Numerical Study of Defrost Phenomenon of Automobile Windshield  

박만성 (부산대학교 기계공학과)
황지은 (부산대학교 기계공학과)
박원규 (부산대학교 기계기술연구소)
장기룡 (현대자동차)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.11, no.2, 2003 , pp. 157-163 More about this Journal
Abstract
This work was undertaken for the numerical analysis of defrosting phenomena of automobile windshield. To analyze the defrost, the flow and temperature field of cabin interior, heat transfer through the windshield glass, and phase change of the frost should be analyzed simultaneously. The flow field was obtained by solving the 3-D unsteady Navier-Stokes equation and the temperature field was computed by energy equation. The phase-change process of Stefan problem was solved by enthalpy method. For code validation, the temperature field of the driven cavity was calculated. The result of calculation shows a good agreement with the other numerical results. Then, the present code was applied to the defrosting analysis of a real automobile and, also, a good agreement with experiment was obtained.
Keywords
Navier-stokes equation; Energy equation; Enthalpy method; Defrost analysis; Phase change;
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