论文标题
可压缩湍流中的循环级联
Cascade of circulicity in compressible turbulence
论文作者
论文摘要
这项工作的目的是研究级联过程是否可以与可压缩三维湍流的旋转运动有关。通过循环镜头检查了这个问题，这个概念与大湍流尺度所携带的角动量有关。通过得出循环系统的monin-yaglom关系，我们表明存在该数量的``有效''级联，只要流动以具有螺线管成分的力搅拌。该结果是独立于状态方程的表达而独立于获得的。为了补充这些结果，对流量进行了粗粒分析。这种方法允许将循环转移和生产项的贡献分开，并在惯性范围内讨论它们各自的影响。
The purpose of this work is to investigate whether a cascading process can be associated with the rotational motions of compressible three-dimensional turbulence. This question is examined through the lens of circulicity, a concept related to the angular momentum carried by large turbulent scales. By deriving a Monin-Yaglom relation for circulicity, we show that an ``effective'' cascade of this quantity exists, provided the flow is stirred with a force having a solenoidal component. This outcome is obtained independently from the expression of the equation of state. To supplement these results, a coarse-graining analysis of the flow is performed. This approach allows to separate the contributions of the transfer and production terms of circulicity and to discuss their respective effects in the inertial range.
