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Información tecnológica

versión On-line ISSN 0718-0764


GATICA, Jorge A; PITA, Vicente A  y  LOBO, Nisio de C. Simulation of Frost Deposit in Cold Surfaces. Inf. tecnol. [online]. 2009, vol.20, n.2, pp.113-126. ISSN 0718-0764.

The development of a computational code that simulates the formation and frost growth on a cool plate, for the vapor-water ablimation of a humid air current that flows on it, is presented. The numeric modeling is based on the conservation equations of mass, energy, momentum and species applied to the frost, air-vapor mixtures and air-frost interface. The system of equations is not linear and is coupled by the ice volumetric fraction which is calculated by iteration. The model is validated by comparing the numerical results with experimental data, reproducing the thermophysical properties evolution of the frost formed and predicting the behavior for other operating conditions. The results reveal better agreement with experimental data that those obtained by other authors, and slightly inferior to that of the supersaturation model.

Palabras clave : frost growth; computational code; simulator; thermophysical properties; modeling.

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