Sugawara, M. ; Tago, M. ; Nozawa, R. ; Beer, Hans (2003)
Freezing of snow layers saturated with a calcium chloride aqueous solution.
In: Heat and Mass Transfer, 39 (5-6)
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2003 |
| Autor(en): | Sugawara, M. ; Tago, M. ; Nozawa, R. ; Beer, Hans |
| Art des Eintrags: | Bibliographie |
| Titel: | Freezing of snow layers saturated with a calcium chloride aqueous solution |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Januar 2003 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Heat and Mass Transfer |
| Jahrgang/Volume einer Zeitschrift: | 39 |
| (Heft-)Nummer: | 5-6 |
| URL / URN: | http://dx.doi.org/10.1007/s00231-002-0325-8 |
| Kurzbeschreibung (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. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Technische Thermodynamik (TTD) |
| Hinterlegungsdatum: | 26 Feb 2015 16:18 |
| Letzte Änderung: | 05 Aug 2019 12:54 |
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