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arXiv physics/0503190physics.flu-dyn
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Richtmyer-Meshkov湍流混合区的精确展开律

Exact Expansion Law for Richtmyer-Meshkov Turbulent Mixing Zone

N. A. Inogamov, A. M. Oparin

摘要:

Richtmyer-Meshkov不稳定性的发展导致两种物质通过接触边界分离的混合。两种流体的混合被限制在两个混合前沿之间。普适渐近性遵循后期的过渡阶段。描述前沿穿透的函数渐进地转换为幂律依赖性。混合是伴随着一个湍流混合区主导尺度的级联扩大。幂律的指数为:2D为2/5,3D为1/3。在我们的工作中计算了这些精确的指数。它们是由动量从小尺度到大尺度的再分配机制决定的。

英文摘要:

Development of the Richtmyer-Meshkov instability leads to mixing of two substances separated by contact boundary. Mixture of two fluids is confined between two mixing fronts. Universal asymptotics follows the transition stage at late time. Functions which describe the fronts penetration asymptoticaly transform to power law dependences. Mixing is acompanied by cascade of enlarging of dominant scale of a turbulent mixing zone. The exponents of the power laws are: 2/5 for 2D and 1/3 for 3D cases. These exact exponents are calculated in our work. They are determined by the mechanism of redistribution of momentum from small into the large scales.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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