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Numerical model of supercooled water freezing

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2040
pages 1999-2003

A. Criscione
Department of Mechanical Engineering, Technische Universit#228;t Darmstadt, Petersenstr. 30, D-64287, Germany

Z. Tukovic
Department of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, HR-10002, Croatia

D. Kintea
Institute of Fluid Mechanics and Aerodynamics, Center of Smart Interfaces, Technische Universität Darmstadt, Petersenstr. 30, D-64287, Germany

Ilia V. Roisman
Technische Universität Darmstadt, Institute of Fluid Mechanics and Aerodynamics, Center of Smart Interfaces, Germany

Suad Jakirlic
Department of Mechanical Engineering Institute of Fluid Mechanics and Aerodynamics (SLA) / Center of Smart Interfaces (CSI) Technische Universitat Darmstadt Petersenstrasse 17, D-64287 Darmstadt, Germany

Cameron Tropea
Technische Universität Darmstadt, Institute of Fluid Mechanics and Aerodynamics, Center of Smart Interfaces, International Research Training Group Darmstadt-Tokyo on Mathematical Fluid Dynamics, Germany

Sinopsis

Airframe icing is a topic of great interest to aerospace industry because it is mainly concerned with the safe and efficient operation of an aircraft under all weather conditions. Hence, understanding the freezing process of super-cooled water is a problem of fundamental importance and general utility. In the present work a numerical model is formulated for the freezing mechanism under the conditions of a metastable state of supercooling. The model is based on the physical and mathematical description of the classic Stefan-problem. Two different numerical approaches are used for tracking the interface between the liquid and solid phases. A dendritic growth can be observed being characteristic for the freezing process of supercooled water.

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