| 柱状固粒两相边界层流场稳定性研究 |
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| 引用本文： | 林建忠,聂德明. 柱状固粒两相边界层流场稳定性研究[J]. 应用数学和力学, 2003, 24(6): 559-564 |
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| 作者姓名： | 林建忠 聂德明 |
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| 作者单位： | 浙江大学, 力学系, 流体传动及控制国家重点实验室, 杭州, 310027 |
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| 基金项目： | 国家杰出青年科学基金资助项目(19925210) |
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| 摘 要： | 从运动方程和本构方程出发,推导得到了含柱状粒子两相流场的修正Orr-Sommerfeld方程,然后在边界层流场中,采用数值计算方法,得到了含柱状粒子流场的稳定性中性曲线,给出了流场失稳的临界雷诺数.结果表明在所述情况下,柱状粒子对流场起着抑制失稳的作用,而且抑制的程度随着柱状粒子体积分数和长径比的增加而提高.
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| 关 键 词： | 柱状粒子 两相流 边界层 稳定性 |
| 文章编号： | 1000-0887(2003)06-0559-06 |
| 收稿时间： | 2002-02-24 |
| 修稿时间： | 2002-02-24 |
Research on the Flow Stability in a Cylindrical Particle Two-Phase Boundary Layer |
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| Affiliation: | Transmission and Control, Zhejiang University, Hangzhou 310027, P. R. China |
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| Abstract: | Based on the momentum and constitutive equations, the modified Orr-Sommerfeld equation describing the flow stability in a cylindrical particle two-phase flow was derived. For a cylindrical particle two-phase boundary layer, the neutral stability curves and critical Reynolds number were given with numerical simulation. The results show that the cylindrical particles have a suppression effect on the flow instability, the larger the particle volume fraction and the particle aspect-ratio are, the more obvious the suppression effect is. |
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| Keywords: | cylindrical particle two-phase flow boundary layer stability |
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