Model of pure metal solidification using the power-type function

• Autorzy: Mochnacki B. , Szopa R.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The typical mathematical descriptions of pure metal solidification (micro/macro approach) base on the linear or exponential (Kolmogoroff) models. In the paper the possibilities of such models modification are presented. This new model can be called a power type one. The approach proposed can be usefull on the stage of numerical simulation of solidification on the micro/macro scale. Design/methodology/approach: The local and temporary volumetric fraction of solid state is described by the equation from which both the linear and exponential model can be obtained. Introducing the additional parameter to this equation the new solidification model is found. Findings: The method here presented allows to determine the transient temperature field in a non-homogeneous system casting-mould and to observe the course of metal solidification. The obtained cooling curves allow to observe (contrary to macro models) the recalescence effect. Practical implications: The solidification model in a version presented in this paper can be an effective tool for numerical simulation of solidification process. Originality/value: The concept of introduction of power-type function for the mathematical description of micro/macro solidification model is original and gives the new possibilities numerical methods application in a thermal theory of foundry processes.

Słowa kluczowe

EN

numerical techniques; solidification of metals; micro models; macromodels

PL

techniki numeryczne; krzepnięcie metali; model mikro; model makro

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 22, nr 1
• Strony: 65--68
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Mochnacki B.

autor

Szopa R.

• Institute of Mathematics and Computer Science, Czestochowa University of Technology, ul. Dąbrowskiego 73, 42-200, Czestochowa, Poland,

Bibliografia

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