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arXiv 1002.4979math.AP
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高粘性对Navier-Stokes湍流的影响

Effect of hyperviscosity on the Navier-Stokes turbulence

Abdelhafid Younsi

摘要:

本文通过在传统的Navier-斯托克斯方程中加入一个高阶人工粘性项,对该方程进行了修正。我们首先表明,正规化系统的解决方案强烈收敛到常规系统的解决方案的正规化参数为零,对于每个维度d $\le$ 4。然后,我们表明,使用这个人工粘性项导致截断的自由度的数量在这些方程的解决方案的长期行为。这一结果表明,高粘性Navier-Stokes系统是一个有趣的三维流体湍流模型。

英文摘要:

In this paper we modified the Navier-Stokes equations by adding a higher order artificial viscosity term to the conventional system. We first show that the solution of the regularized system converges strongly to the solution of the conventional system as the regularization parameter goes to zero, for each dimension d $\le$ 4. Then we show that the use of this artificial viscosity term leads to truncated the number of degrees of freedom in the long-time behavior of the solutions to these equations. This result suggests that the hyperviscous Navier-Stokes system is an interesting model for three-dimensional fluid turbulence.

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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