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Title: Isothermal flow of air through snow of variable permeability
Authors: Yen, Yin-Chao.
Tien, Chi, 1930-
Bender, James A. (James Arthur), 1923-
Keywords: Snow
Air flow
Fluid flow
Mathematical analysis
Mathematical models
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Research report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 143.
Description: Research Report
Summary: Snow is a permeable material, and any problem concerning heat flow and mass transfer must take into account the movement of air in the material. The circulation of air through a snow pack has been found to be effective for the cooling of undersnow structures such as those in Greenland. A simplified model is proposed to describe the physical system. The simplifications are made on the basis of field observations as well as considerations from a mathematical point of view. The mixed boundary value problem is solved numerically to account for the effect of variable permeability. The expression for pressure distribution is given as a function of position and the total air flow rate is obtained in terms of operating variables. An illustrative example based on actual permeability data is given to indicate the procedures.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Research Report

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