Motion of an Interface between Two Uniform-Vorticity Regions in Two-Dimensional Inviscid Fluids

スポンサーリンク

概要

• 論文の詳細を見る

• Motion of an interface is considered between two infinite layers of uniform vortic-ity in two-dimensional flow of inviscid fluid. The vorticity junnps at the interface butthe velocity is continuous to inhibit the Kelvin-Helmholtz instability. The dynamicsof the interface is described with an extention of Birkhoff equ;ttion for an irrotationalperturbation. Fully nonlinear behaviors are studied by numerical simulations basedon the point-vortex method. For large enough disturbances, "filaments" are formedas in the case of Contour Dynamics of finte vorticity regions. The curvature grows ap-poximately exponentially with respect to time and the well-pc>sedness of the problemis suggested.[Birkhoff equation, Contour Dynamics, interface, Kelvin-Ffelmholtz instability, ll point-vortex method, singularity, uniform vorticityl

• 社団法人日本物理学会の論文
• 1989-01-15

著者

• Ohkitani Koji

  Department Of Physics Faculty Of Science Kyoto University

関連論文

• Temporal Intermittency in the Energy Cascade Process and Local Lyapunov Analysis in Fully-Developed Model Turbulence : General and Mathematical Physics
• Interaction of Helical Modes in Formation of Vortical Structures in Decaying Isotropic Turbulence
• Error Growth in a Decaying Two-Dimensional Turbulence
• Triply Periodic Motion in a Navier-Stokes Flow
• Orthonormal Wavelet Expansion and Its Application to Turbulence : Progress Letters
• Motion of an Interface between Two Uniform-Vorticity Regions in Two-Dimensional Inviscid Fluids
• Enstrophy Cascade in a Model of 2D Turbulence : Comparison with 3D Energy Cascade
• The Inertial Subrange and Non-Positive Lyapunov Exponents in Fully-Developed Turbulence
• Lyapunov Spectrum of a Chaotic Model of Three-Dimensional Turbulence

スポンサーリンク