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首页> 外文期刊>Journal of the Brazilian Society of Mechanical Sciences and Engineering >Numerical simulation of the solidification of pure melt by a phase-field model using an adaptive computation domain
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Numerical simulation of the solidification of pure melt by a phase-field model using an adaptive computation domain

机译：使用自适应计算域的相场模型对纯熔体凝固的数值模拟

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In this paper, we present a phase-field model with a grid based on the Finite-Difference Method, for improvement of computational efficiency and reducing the memory size requirement. The numerical technique, which is based on the temperature change of the pure material, enables us to use, in the initial steps of the computation, a very small computational domain. Subsequently, in the course of the simulation of the solidification process, the computation domain expands around the dendrite. The computation showed that the dendrite with well-developed secondary arms can be obtained with low computation time and moderate memory demand. The computational efficiency of this numerical technique, the microstructural evolution during the solidification, and competitive growth between side-branches are discussed.
机译：在本文中，我们提出了一种基于有限差分法的网格相场模型，以提高计算效率并减少内存大小要求。基于纯材料温度变化的数值技术使我们能够在计算的初始步骤中使用很小的计算域。随后，在凝固过程的模拟过程中，计算域围绕枝晶扩展。计算表明，可以以较低的计算时间和适度的存储需求获得具有发达的次级臂的枝晶。讨论了此数值技术的计算效率，凝固过程中的微观结构演变以及分支之间的竞争性增长。

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