反应诱导的偏离连续的纳维埃-斯托克斯流动
Christopher T Williams1,2, Ryan M McMullen1, Michael A Gallis1
1Engineering Sciences Center, Sandia National Laboratories, Albuquerque, NM 87185-0840.
概括
外热反应破坏了纳维埃-斯托克斯 (NS) 方程.
科学领域:
- 流体动力学 流体动力学
- 化学动力学 化学动力学
- 计算物理学的计算物理.
背景情况:
- 反应性水力动力学流是多尺度的,从含有能量到分子的尺度.
- 纳维埃-斯托克斯 (NS) 方程在宏观上描述流,假设尺度分离.
研究的目的:
- 为了研究在反应性流中NS方程的分解.
- 探索外热反应对分子水平流的影响.
主要方法:
- 使用了分子级的模拟.
- 分析的重点是反应流的近连续状态.
主要成果:
- 已经证明,外热双分子反应会导致NS分解.
- 反应碰撞扭曲了速度分布功能和动能转移.
- 从NS的偏离被观察到大规模,影响流动力动能.
结论:
- 在某些条件下,NS描述对于反应性流是不够的.
- 分子不平衡显著影响宏观流特性.
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