A computer model to predict the frost formation process on a flat plate was developed for application to most environmental conditions under which frost occurs. The model was analytically based on a generalized frost thermal conductivity expression, on frost density and thickness rate equations, and on modified heat and mass transfer coefficients designed to fit the available experimental data. The broad experimental ranges reflected by the extremes in ambient humidities, wall temperatures, and convective flow properties in the various publications which were examined served to severely test the flexibility of the model. An efficient numerical integration scheme was developed to solve for the frost surface temperature, density, and thickness under the changing environmental conditions. The comparison of results with experimental data was very encouraging.

  • Corporate Authors:

    Dayton University

    Research Institute, 300 College Park Avenue
    Dayton, OH  United States  45409
  • Authors:
    • Dietenberger, M
    • Kumar, P
    • Luers, J
  • Publication Date: 1979-4

Media Info

  • Pagination: 80 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00198522
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-CR-3129 Final Rpt.
  • Contract Numbers: NAS8-31294
  • Files: TRIS
  • Created Date: Oct 17 1979 12:00AM