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Numerical solutions for mixed controlled solidification of phase change materials

机译:相变材料混合控制凝固的数值解

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摘要

Kinetics of solidification of phase change materials (PCM) was analyzed for combined heat conduction in the PCM and container wall, and convection in the cold fluid. Stable and convergent numerical methods were derived after transformation to normalized size scale, and corresponding immobilization of the moving boundary. The accuracy was confirmed by comparing numerical solutions and corresponding analytical solutions for control by heat conduction in solidifying layers. The proposed method was used to assess when solidification is controlled solely by conduction in solidified layer, and to analyze relative roles of conduction through the container and convection in the cold fluid.
机译:分析了相变材料(PCM)的凝固动力学,以了解PCM和容器壁中的热传导以及冷流体中的对流。转换为归一化的尺寸标尺并相应地固定移动边界后,得出了稳定且收敛的数值方法。通过比较数值解决方案和相应的分析解决方案(通过凝固层中的热传导进行控制)来确认精度。所提出的方法用于评估何时仅通过凝固层中的传导来控制凝固,并分析通过容器传导和在冷流体中对流的相对作用。

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