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Three-dimensional free surface modelling in an unstructured mesh environment for metal processing applications

Three-dimensional free surface modelling in an unstructured mesh environment for metal processing applications

Pericleous, K.A. ORCID: 0000-0002-7426-9999, Moran, G.J., Bounds, S.M., Chow, P. and Cross, M. (1998) Three-dimensional free surface modelling in an unstructured mesh environment for metal processing applications. Applied Mathematical Modelling, 22 (11). pp. 895-906. ISSN 0307-904X (doi:10.1016/S0307-904X(98)10033-1)

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Abstract

In the casting of metals, tundish flow, welding, converters, and other metal processing applications, the behaviour of the fluid surface is important. In aluminium alloys, for example, oxides formed on the surface may be drawn into the body of the melt where they act as faults in the solidified product affecting cast quality. For this reason, accurate description of wave behaviour, air entrapment, and other effects need to be modelled, in the presence of heat transfer and possibly phase change. The authors have developed a single-phase algorithm for modelling this problem. The Scalar Equation Algorithm (SEA) (see Refs. 1 and 2), enables the transport of the property discontinuity representing the free surface through a fixed grid. An extension of this method to unstructured mesh codes is presented here, together with validation. The new method employs a TVD flux limiter in conjunction with a ray-tracing algorithm, to ensure a sharp bound interface. Applications of the method are in the filling and emptying of mould cavities, with heat transfer and phase change.

Item Type: Article
Uncontrolled Keywords: three-dimensional free surface modelling, unstructured mesh environment, metal processing applications
Subjects: Q Science > QA Mathematics
Pre-2014 Departments: School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group
School of Computing & Mathematical Sciences > Department of Computer Systems Technology
Related URLs:
Last Modified: 14 Oct 2016 08:59
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/130

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