| 泡沫金属制备过程中气体射流发泡过程数值模拟 |
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| 引用本文： | 李科,岳猛,武文斐.泡沫金属制备过程中气体射流发泡过程数值模拟[J].热科学与技术,2012,11(1):42-47. |
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| 作者姓名： | 李科 岳猛 武文斐 |
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| 作者单位： | 1. 内蒙古科技大学能源与环境学院,内蒙古包头014010;清华大学核能与新能源技术研究院,北京100084
2. 内蒙古科技大学能源与环境学院,内蒙古包头,014010 |
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| 基金项目： | 国家自然科学基金资助项目(51006049);教育部科学技术研究重点资助项目(211032) |
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| 摘 要： | 应用Euler-Lagrange方法对制备泡沫金属过程中的空气射流发泡过程的两相湍流流动进行三维数值模拟。连续相液态金属铝液采用标准k-ε模型,而离散相气泡采用颗粒轨道模型描述。考虑气泡受力分析、气泡湍流扩散以及气液两相耦合对颗粒轨道模型的影响。模拟结果表明:相同气体体积流量下铝液的轴向速度沿径向方向有所增加;当气体体积流量为1.0L/min时气泡质量浓度分布不均匀度最小,从而有利于泡沫的收集。
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| 关 键 词： | 泡沫金属 两相流 欧拉-拉格朗日模型 气泡质量浓度 |
Numerical simulation of gas injection on preparation for metal foams |
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| LI Ke
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YUE Meng
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WU Wen-fei.Numerical simulation of gas injection on preparation for metal foams[J].Journal of Thermal Science and Technology,2012,11(1):42-47. |
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| Authors: | LI Ke YUE Meng WU Wen-fei |
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| Affiliation: | 1 1.School of Energy and Environment,Inner Mengolia University of Science and Technology,Baotou 014010,China; 2.Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China |
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| Abstract: | Three-dimensional numerical simulation of gas jetting on preparation for metal foamed was presented by using Euler-Lagrange model.The standard k-ε model was adopted where liquid aluminum metal was taken as continuous phase and the dispersed bubble was modeled by particle trajectory model.With the effects of bubble force analysis,turbulent diffusion were considered.The numerical simulation results showed that the axial velocity of aluminum metal increases along with the radial direction under the same gas flow rate and the maldistribution factor of bubble concentration is smallest at the 1.0 L/min of gas flow rate,which is beneficial to the liquid aluminum metal foam collection. |
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| Keywords: | metal foams two phase flow Eluer-Lagrange model bubble concentration |
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