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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >Numerical simulation of contact melting using the cell-splitting modified enthalpy method
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Numerical simulation of contact melting using the cell-splitting modified enthalpy method

机译：用细胞分离改性焓法的接触熔化数值模拟

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摘要

The present work deals with the numerical simulation of contact melting using a cell-splitting enthalpy method, which is an improvement over the conventional enthalpy-porosity method. It is demonstrated that such a method is far superior to the enthalpy-porosity method which not only is unable to capture the interface precisely but is also unable to capture the melt rates, unless the coefficients are back-fitted with the experimental data. In contact melting, the contact layer is thin and hence to resolve the flow, fine grids have to be used. A novel integral model is proposed where a single control volume is used in the contact layer. A parametric study is performed for contact melting in a square geometry and a correlation is evolved for the melt rates. The shapes of the solid during contact and noncontact melting are discussed and the physical mechanisms that decide the evolution are articulated.
机译：本工作涉及使用细胞分离焓法的接触熔化的数值模拟，这是对传统焓 - 孔隙度法的改善。 证明这种方法远远优于焓 - 孔隙度法，该方法不仅无法精确地捕获界面，而且也无法捕获熔体速率，除非系数被返回配合实验数据。 在接触熔化时，接触层薄而薄，因此可以使用细胞。 提出了一种新的积分模型，其中在接触层中使用单个控制体积。 在正方形几何形状中进行参数化研究，以便为熔体速率演化相关性。 讨论了接触和非接触熔融期间的固体形状，并且阐述了决定进化的物理机制。

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