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Freezing of snow layers saturated with a calcium chloride aqueous solution

Sugawara, M. and Tago, M. and Nozawa, R. and Beer, Hans (2003):
Freezing of snow layers saturated with a calcium chloride aqueous solution.
In: Heat and Mass Transfer, 39 (5-6), pp. 463-469. ISSN 0947-7411,
[Article]

Abstract

This paper provides a basic information to control snow layers on roads or runways in order to maintain road safety. The snow saturated with a calcium chloride aqueous solution is initially in the thermodynamic equilibrium at the desired concentration and temperature. Since the snow layer bottom is quickly cooled by maintaining a fixed cooling wall temperature, the aqueous solution in the snow layer will freeze gradually upwards without natural convection in the layer due to the stable density distribution. It is seen that the temperature/concentration and the freezing volume fraction are affected by the cooling wall temperature and the initial concentration in the layer. A simple idealized numerical model predicts well the freezing behavior of the snow layer saturated with the aqueous solution.

Item Type: Article
Erschienen: 2003
Creators: Sugawara, M. and Tago, M. and Nozawa, R. and Beer, Hans
Title: Freezing of snow layers saturated with a calcium chloride aqueous solution
Language: English
Abstract:

This paper provides a basic information to control snow layers on roads or runways in order to maintain road safety. The snow saturated with a calcium chloride aqueous solution is initially in the thermodynamic equilibrium at the desired concentration and temperature. Since the snow layer bottom is quickly cooled by maintaining a fixed cooling wall temperature, the aqueous solution in the snow layer will freeze gradually upwards without natural convection in the layer due to the stable density distribution. It is seen that the temperature/concentration and the freezing volume fraction are affected by the cooling wall temperature and the initial concentration in the layer. A simple idealized numerical model predicts well the freezing behavior of the snow layer saturated with the aqueous solution.

Journal or Publication Title: Heat and Mass Transfer
Journal volume: 39
Number: 5-6
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD)
Date Deposited: 26 Feb 2015 16:18
Official URL: http://dx.doi.org/10.1007/s00231-002-0325-8
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