Formation of the Chain of Ring-Like Vortices in a Transitional Boundary Layer

• 来源期刊: 中国物理快报(英文版)
• 年，卷（期）: 2000,（8）
• 所属期刊栏目: Fundamental areas of phenomenology
• 页码范围: 583-585
• 页数: 3页
• 语种: 英文

摘要

One mechanism by which laminar flow becomes turbulence is through the instability of vortex interaction. The nonlinear evolution of the interactions between the ∧-vortex and the secondary closed vortex has been investigated. This nonlinear instability process leads to some fundamental changes in the topology of flows. Experimental observations are presented here, showing the formation of a chain of ring-like vortices, which generate high frequency spikes on time traces in a transitional boundary layer.