• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NATO ARW and IUTAM Symposium Sep 2-7, 2001 Zakopane, Poland >Interaction of localised packets of vorticity with turbulence
【24h】

Interaction of localised packets of vorticity with turbulence

机译：局部涡流与湍流的相互作用

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The evolution of initially weak structures of vorticity as they evolve in an incompressible turbulent flow is investigated. Such objects are candidates for important structures in the inertial range and in the dissipation range of scales. As these structures are strained by the flow, fine-scales of vorticity are produced along the direction of maximum compression with a consequent flow of energy to the high wavenumbers. It is shown that, under certain circumstances, the self-energy spectrum of such a structure may be time-averaged, producing a fractional power law. The exponent of the power law depends on the ratio of the first two Lyapunov exponents of the strain tensor.
机译：研究了最初的弱涡结构在不可压缩的湍流中的演化。这些物体是惯性范围和标尺耗散范围内重要结构的候选对象。当这些结构受到流动的拉力时，会沿着最大压缩方向产生微小尺度的涡旋，从而使能量流向高波数。结果表明，在某些情况下，这种结构的自能谱可以进行时间平均，从而产生分数次幂定律。幂律的指数取决于应变张量的前两个Lyapunov指数之比。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号