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基于微观方法对液态铝泡沫宏观析液过程的数值模拟研究

李科 解茂昭 刘红

李科, 解茂昭, 刘红. 基于微观方法对液态铝泡沫宏观析液过程的数值模拟研究[J]. 应用数学和力学, 2009, 30(12): 1453-1462. doi: 10.3879/j.issn.1000-0887.2009.12.006
引用本文: 李科, 解茂昭, 刘红. 基于微观方法对液态铝泡沫宏观析液过程的数值模拟研究[J]. 应用数学和力学, 2009, 30(12): 1453-1462. doi: 10.3879/j.issn.1000-0887.2009.12.006
LI Ke, XIE Mao-zhao, LIU Hong. Microscopical and Macroscopical Numerical Study on the Drainage Process in Fabricating Foamed Aluminum[J]. Applied Mathematics and Mechanics, 2009, 30(12): 1453-1462. doi: 10.3879/j.issn.1000-0887.2009.12.006
Citation: LI Ke, XIE Mao-zhao, LIU Hong. Microscopical and Macroscopical Numerical Study on the Drainage Process in Fabricating Foamed Aluminum[J]. Applied Mathematics and Mechanics, 2009, 30(12): 1453-1462. doi: 10.3879/j.issn.1000-0887.2009.12.006

基于微观方法对液态铝泡沫宏观析液过程的数值模拟研究

doi: 10.3879/j.issn.1000-0887.2009.12.006
基金项目: 国家自然科学基金资助项目(50876017)
详细信息
    作者简介:

    李科(1981- ),男,内蒙古鄂尔多斯人,副教授,博士(联系人.E-mail:like16615.student@sina.com);解茂昭(1944- ),男,成都人,教授,博士生导师(E-mail:xmz@dlut.edu.cn).

  • 中图分类号: O368;TK121

Microscopical and Macroscopical Numerical Study on the Drainage Process in Fabricating Foamed Aluminum

  • 摘要: 通过微元管内流动模型,研究了液态金属熔体泡沫体内单条Plateau边界内析液过程中的速度场.分析了不同Newton表面粘度,即不同的气液界面运动能力(无量纲参数M)下,Plateau边界内速度的分布.结果显示:在相同的气液界面运动能力和曲率半径条件下,泡沫体内固壁处Plateau边界内速度约是内部Plateau边界内速度的6~8倍,从而解释了不同容器内泡沫体析液速率的差异现象;发现M存在1个临界值,在此值的两边,液膜厚度与曲率半径的比值对Plateau边界内速度的影响呈现出相反的趋势.结合多尺度方法,进而利用微观计算结果建立了泡沫体的整体宏观析液模型,将模型计算结果和经典析液方程计算结果及实验值作了比较,结果表明:该文模型计算结果与实验值在泡沫层上部、中部吻合较好,M值和气泡大小对析液过程有显著影响.
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出版历程
  • 收稿日期:  2009-02-17
  • 修回日期:  2009-11-11
  • 刊出日期:  2009-12-15

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