Code-to-code verification of an axisymmetric model of the Bridgman solidification process for alloys
| Autor: | Jerzy Banaszek, Anthony J. Robinson, Sara Battaglioli, Shaun McFadden, Mirosław Seredyński, Robin P. Mooney |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Computer science Applied Mathematics Mechanical Engineering Process (computing) Rotational symmetry Mechanical engineering 02 engineering and technology 021001 nanoscience & nanotechnology Grid 01 natural sciences Computer Science Applications Mechanics of Materials 0103 physical sciences Heat transfer Transient (oscillation) Sensitivity (control systems) 0210 nano-technology Verification and validation |
| Zdroj: | International Journal of Numerical Methods for Heat & Fluid Flow. 27:1142-1157 |
| ISSN: | 0961-5539 |
| Popis: | Purpose Numerical models of manufacturing processes are useful and provide insight for the practitioner; however, model verification and validation are a prerequisite for expedient application. This paper aims to detail the code-to-code verification of a thermal numerical model for the Bridgman solidification process of alloys in a two-dimensional axisymmetric domain, against an established commercial code (ANSYS Fluent); the work is considered a confidence building step in model development. Design/methodology/approach A grid sensitivity analysis is carried out to establish grid independence, and this is followed by simulations of two transient solidification scenarios: pulling rate step change and ramp input; the results of which are compared and discussed. Findings Good conformity of results is achieved; hence, the non-commercial model is code-to-code verified; in addition, the ability of the non-commercial model to deal with radial heat flow is demonstrated. Originality/value The ability of the home made model for Bridgman furnace solidification to deal with cases where significant radial heat transfer occurs in the sample was demonstrated. The introduction of front tracking to model the macroscopic growth of dendritic mush and the region of undercooled liquid is identified as the next step in model development. |
| Databáze: | OpenAIRE |
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