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平面射流中纳米粒子积聚的矩方法

于明州 林建忠 陈丽华

于明州, 林建忠, 陈丽华. 平面射流中纳米粒子积聚的矩方法[J]. 应用数学和力学, 2007, 28(11): 1287-1295.
引用本文: 于明州, 林建忠, 陈丽华. 平面射流中纳米粒子积聚的矩方法[J]. 应用数学和力学, 2007, 28(11): 1287-1295.
YU Ming-zhou, LIN Jian-zhong, CHEN Li-hua. Nanoparticle Coagulation in a Planar Jet via Moment Method[J]. Applied Mathematics and Mechanics, 2007, 28(11): 1287-1295.
Citation: YU Ming-zhou, LIN Jian-zhong, CHEN Li-hua. Nanoparticle Coagulation in a Planar Jet via Moment Method[J]. Applied Mathematics and Mechanics, 2007, 28(11): 1287-1295.

平面射流中纳米粒子积聚的矩方法

基金项目: 科技部重大基础研究前期研究专项资助项目(2005CCA06900)
详细信息
    作者简介:

    林建忠(联系人.Tel:+86-571-87952882;Fax:+86-571-87951464;E-mail:jzlin@sfp.zju.edu.cn).

  • 中图分类号: O359

Nanoparticle Coagulation in a Planar Jet via Moment Method

  • 摘要: 应用大涡模拟方法求解平面湍射流场,矩方法求解纳米粒子的一般动力学方程.通过对每种情况3 000个时间步的平均,得到了Schmidt数和Damkohler数对纳米粒子动力学特性的影响.结果发现, 当气体参数不变时,Schmidt数的变化只对直径小于1 nm的颗粒数密度的分布产生影响.直径小的颗粒其颗粒数密度沿流动方向下降迅速,而具有大Schmidt数的颗粒,沿横向的分布较窄.较小的颗粒容易发生积聚和扩散,并且体积增长较快,因而颗粒多分散性较为明显.小的颗粒积聚时间尺度能增强颗粒的碰撞和积聚频率,导致颗粒尺寸迅速增大.Damkohler数越大,颗粒的多分散也越明显.
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出版历程
  • 收稿日期:  2005-11-01
  • 修回日期:  2007-07-16
  • 刊出日期:  2007-11-15

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