Premium
An efficient numerical method for solid–liquid transitions in optical rewritable recording
Author(s) -
Brusche J. H.,
Segal A.,
Vuik C.
Publication year - 2008
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.2433
Subject(s) - isothermal process , stefan problem , boundary (topology) , computer science , phase transition , extension (predicate logic) , phase (matter) , materials science , thermodynamics , mathematics , mechanics , algorithm , computational science , physics , mathematical analysis , quantum mechanics , programming language
Melting and solidification processes are encountered in a variety of industrial applications. Examples include the steel industry, food processing and the recording of data in optical data storage. The phase transition, induced by a heat source, can be described by a two‐phase Stefan formulation. To solve such highly non‐linear moving boundary problems within industrially relevant domains, we propose an extension to 3D space of the temperature‐based method described by Fachinotti et al . ( Int. J. Numer. Meth. Engng 1999; 44 (12):1863–1884). By the use of discontinuous spatial integration accurate solutions can be efficiently obtained for isothermal problems that are driven by the boundary conditions. However, the temperature approach can fail for isothermal problems that are driven by an (external) source. This is remedied by introducing an artificial mushy region around the melting temperature. The developed method has been applied to 3D optical rewritable recording simulations. Copyright © 2008 John Wiley & Sons, Ltd.