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Computational modeling of mold filling and related free-surface flows in shape casting: an overview of the challenges involved

Computational modeling of mold filling and related free-surface flows in shape casting: an overview of the challenges involved

Cross, M., McBride, D., Croft, T.N., Williams, A.J., Pericleous, K. ORCID: 0000-0002-7426-9999 and Lawrence, J.A. (2006) Computational modeling of mold filling and related free-surface flows in shape casting: an overview of the challenges involved. Metallurgical and Materials Transactions B, 37 (6). pp. 879-885. ISSN 1073-5615 (Print), 1543-1916 (Online) (doi:10.1007/BF02735009)

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Abstract

Accurate representation of the coupled effects between turbulent fluid flow with a free surface, heat transfer, solidification, and mold deformation has been shown to be necessary for the realistic prediction of several defects in castings and also for determining the final crystalline structure. A core component of the computational modeling of casting processes involves mold filling, which is the most computationally intensive aspect of casting simulation at the continuum level. Considering the complex geometries involved in shape casting, the evolution of the free surface, gas entrapment, and the entrainment of oxide layers into the casting make this a very challenging task in every respect. Despite well over 30 years of effort in developing algorithms, this is by no means a closed subject. In this article, we will review the full range of computational methods used, from unstructured finite-element (FE) and finite-volume (FV) methods through fully structured and block-structured approaches utilizing the cut-cell family of techniques to capture the geometric complexity inherent in shape casting. This discussion will include the challenges of generating rapid solutions on high-performance parallel cluster technology and how mold filling links in with the full spectrum of physics involved in shape casting. Finally, some indications as to novel techniques emerging now that can address genuinely arbitrarily complex geometries are briefly outlined and their advantages and disadvantages are discussed.

Item Type: Article
Additional Information: [1] This article is based on a presentation made in the John Campbell Symposium on Shape Casting, held during the TMS Annual Meeting, February 13–17, 2005, in San Francisco, CA.
Uncontrolled Keywords: computer modelling, modeling, mould filling, shape casting
Subjects: T Technology > TS Manufactures
Q Science > QA Mathematics
Faculty / Department / Research Group: Faculty of Architecture, Computing & Humanities
Related URLs:
Last Modified: 14 Oct 2016 09:02
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/1057

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