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首页> 外文期刊>Journal of Materials Science >Transient VAR ingot growth modelling: application to specialty steels
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Transient VAR ingot growth modelling: application to specialty steels

机译：瞬态VAR铸锭生长模型：在特种钢中的应用

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摘要

A numerical model of the VAR process has been developed at the Ecole des Mines de Nancy over more than 12 years, in close collaboration with industrial partners, to simulate remelting of titanium and zirconium alloys. Nowadays, its applications are extended to specialty steels. Recent studies on the flow modelling highlighted the influence of the turbulence model and the mesh size on the computed evolution of the pool geometry in the upper part of the remelted ingot. Thus, various improvements have been achieved, resulting in a better modelling of the transport phenomena. In particular, a numerical model to simulate the continuous supply of metal in the crucible based on mesh cell splitting and growth has been developed and implemented in the software. The results obtained from the improved version are compared with experimental data from the observation of ingots remelted by Aubert & Duval. The relationship between electromagnetic stirring and the generation of turbulence is investigated from the model results. (C) 2004 Kluwer Academic Publishers.
机译：在与工业合作伙伴的密切合作下，南锡高等矿业学院已开发VAR模型的数值模型超过12年，以模拟钛和锆合金的重熔。如今，其应用已扩展到特种钢。流动模型的最新研究强调了湍流模型和网格尺寸对重熔铸锭上部熔池几何形状计算演化的影响。因此，已经实现了各种改进，从而更好地模拟了运输现象。尤其是，已经开发并实现了基于网格单元分裂和生长来模拟坩埚中金属连续供应的数值模型。从改进版本获得的结果与观察到的Aubert＆Duval重熔铸锭的实验数据进行了比较。从模型结果研究了电磁搅拌与湍流产生之间的关系。 （C）2004 Kluwer学术出版社。

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