Accession Number:

AD0645275

Title:

AN INVESTIGATION OF MASS TRANSFER BY SUBLIMATION FROM A SNOW-SURFACE,

Descriptive Note:

Corporate Author:

DARTMOUTH COLL HANOVER N H

Personal Author(s):

• Edgar,Clement B.

Report Date:

1966-09-01

Pagination or Media Count:

61.0

Abstract:

The problem of mass transfer by sublimation from a snow surface subjected to radiation and forced convection is investigated. The effect of irradiation from a nonisothermal source on the mass transfer rate is studied. Forced convection of the flat plate and entrance region type is investigated. Entrance effects are seen to have a negligible influence on the mass transfer rate. The effect of the nonisothermal snow surface is shown to be negligible. A thermal network analysis is developed to predict the mass transfer rate due to the combined effects of radiation and forced convection. Experimental results for mass transfer from a snow surface in the entrance region of a rectangular duct show good agreement with the predicted mass transfer rate. Author

Descriptors:

• (*SNOW
• SUBLIMATION)
• (*SUBLIMATION
• *MASS TRANSFER)
• SURFACES
• CONVECTION(HEAT TRANSFER)
• TURBULENCE
• GAS FLOW

Subject Categories:

• Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE