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Modelling and simulation of heat conduction in 1-D polar spherical coordinates using control volume-based finite difference method
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting. (Gjuteriteknologi)
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting. Diocore AB. (Gjuteriteknologi)
Jönköping University, School of Engineering, JTH, Materials and Manufacturing. (Gjuteriteknologi)ORCID iD: 0000-0002-6548-8815
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting. (Gjuteriteknologi)ORCID iD: 0000-0002-3644-213X
2016 (English)In: International journal of numerical methods for heat & fluid flow, ISSN 0961-5539, E-ISSN 1758-6585, Vol. 26, no 1, p. 2-17Article in journal (Refereed) Published
Abstract [en]

Purpose - The purpose of this paper is to obtain a finite difference method (FDM) solution using control volume for heat transport by conduction and the heat absorption by the enthalpy model in the sand mixture used in casting manufacturing processes. A mixture of sand and different chemicals (binders) is used as moulding materials in the casting processes. The presence of various compounds in the system improve the complexity of the heat transport due to the heat absorption as the binders are decomposing and transformed into gaseous products due to significant heat shock. Design/methodology/approach - The geometrical domain were defined in a 1D polar coordinate system and adapted for numerical simulation according to the control volume-based FDM. The simulation results were validated by comparison to the temperature measurements under laboratory conditions as the sand mould mixture was heated by interacting with a liquid alloy. Findings - Results of validation and simulation methods were about high correspondence, the numerical method presented in this paper is accurate and has significant potential in the simulation of casting processes. Originality/value - Both numerical solution (definition of geometrical domain in 1D polar coordinate system) and verification method presented in this paper are state-of-the-art in their kinds and present high scientific value especially regarding to the topic of numerical modelling of heat flow and foundry technology.

Place, publisher, year, edition, pages
2016. Vol. 26, no 1, p. 2-17
Keywords [en]
Casting, CV-FDM, Heat absorption, Heat conduction, Modelling, Thermal analysis
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-28960DOI: 10.1108/HFF-10-2014-0318ISI: 000379688400001Scopus ID: 2-s2.0-84951193259OAI: oai:DiVA.org:hj-28960DiVA, id: diva2:892628
Available from: 2016-01-11 Created: 2016-01-11 Last updated: 2020-02-03Bibliographically approved

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Diószegi, AttilaTóth, JuditSvidró, József Tamás

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