THEORETICAL ANALYSIS OF THE TIME-SCALING OF FROST GROWTH AND DENSIFICATION ON FLAT SURFACESChristian J. L. Hermes DOI: 10.1615/TFEC2019.phc.026134 Palavras-chave: frost growth and densification, flat surface, scale analysis, square-root-of-time rule ResumoThis brief paper describes the time evolution of three key parameters of frost accretion on flat surfaces: thickness, density, and accumulated mass. A scale analysis is conducted based on energy and mass balances on and within a mature frost layer subjected to frost growth and densification, revealing that both frost thickness and density obey the square-root-of-time rule typical of diffusive-dominant problems in transport phenomena. As a consequence, the accumulated frost mass varies linearly with time. The results have been corroborated with experimental data. |
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