Contribution to the Modeling of the Ice Accretion Process: Ice Density Variation with the Impacted Surface Angle,

Abstract

Icing measurements were carried out in natural winter clouds with an instrumented wind tunnel set up at the top of the Puy de Dome (1500 MLS). The microphysical data (liquid water content, droplet spectra) were obtained by using the PMS ASSP 100. The ice density was measured on a rotating cylinder and the ice deposit of the cross section was photographed on a fixed cylinder. We propose to improve this model by taking into account the ice density variation with the angle of impact on the cylinder. The ice density variation with the angle depends on various parameters: pressure, temperature, air speed, liquid water content and especially on the droplet distribution. This improvement is not sufficient to explain some observed profiles; this may be attributed to the fact that the model is not time dependent.

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1983
Accession Number
ADP001667

Entities

People

  • Jean-francois Gayet
  • M. Bain

Tags

DTIC Thesaurus Topics

  • Buildings And Structures
  • Measurement
  • New Hampshire
  • Pressure Distribution
  • Pressure Measurement
  • Spectra
  • Wind Tunnels
  • Workshops

Readers

  • Aerosol Science/Aerosol Physics
  • Combustion and Flow Dynamics.
  • Polar and Arctic Studies