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A mathematical model for predicting the densification and growth of frost on a flat plate.

Author(s) : TAO Y. X., BESANT R. W., REZKALLAH K. S.

Type of article: Article

Summary

Frost deposition on a cold surface exposed to a warm moist air flow is simulated using a one-dimensional, transient formulation based on the local volume averaging technique. The time variation of the average frost density, frost thickness and heat flux at the cold surface shows a good agreement with the experimental data some distance downstream of the leading edge of a cold flat plate. The results indicate that the local effective vapour mass diffusivity is up to seven times larger than the molecular diffusivity of water vapour in air. This result is comparable with data measured for water vapour diffusion in snow.

Details

  • Original title: A mathematical model for predicting the densification and growth of frost on a flat plate.
  • Record ID : 1993-2558
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 36 - n. 2
  • Publication date: 1993/01

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