THE DYNAMICS OF COHERENT STRUCTURES IN A FLAT-PLATE BOUNDARY-LAYER

被引：5

作者：

REMPFER, D ^{[1
]}

FASEL, H ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT AEROSP & MECH ENGN,TUCSON,AZ 85721

来源：

APPLIED SCIENTIFIC RESEARCH | 1993年 / 51卷 / 1-2期

关键词：

COHERENT STRUCTURES; DYNAMICAL SYSTEMS; CHAOS;

D O I：

10.1007/BF01082517

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

From the data of a direct numerical simulation the three-dimensional coherent structures of an incompressible, spatially evolving flat-plate boundary layer have been calculated using the POD method. By Galerkin projection of the Navier-Stokes equations onto the corresponding system of eigenfunctions then a low-dimensional model of the flow in the form of a system of ODE's has been derived. In a region of the boundary layer just beyond the spike stages of transition this system displays deterministic chaos that has been quantified by determining its Lyapunov exponents.

引用

页码：73 / 77

页数：5

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