Titlebook: Recent Results in Laminar-Turbulent Transition; Selected numerical a Siegfried Wagner,Markus Kloker,Ulrich Rist Conference proceedings 2004

颶風(fēng)

On a Universal Mechanism of Turbulence Production in Wall Shear Flowsnear phenomena observed in boundary layers, channels, and pipe flows. The associated mechanisms of turbulence production are also compared with those observed in developed wall turbulent flows. A striking resemblance is found in all considered cases.

neurologist

The equivalent forcing model for receptivity analysis with application to the construction of a highuction revolves around the value of the Fourier-transformed function of the geometry in the neighborhood of the wavenumbers of an unstable eigenmode of relevance, which we chose as a steady crossflow mode in a 3D boundary layer.

RUPT

Compatriot

On the potential and the limitations of boundary-layer stabilization via active wave cancellation the performance can by achieved by adding nonlinear or special three dimensional modelling capabilities to the system, however, at high computational costs. A variety of acoustical effects have turned out to play an important role in the limits of the achievable Tollmien-Schlichting wave attenuation by means of AWC systems.

Enzyme

Obituary

修改

Absolute/Convective Instability Investigation of Primary and Secondary Crossflow Vorticesy means of Floquet analysis. The convective instability character of primary and secondary crossflow vortices is clarified using the saddle-point method. This demonstrates that up to, and includung secondary instabilities no global instability occurs.

材料等

學(xué)術(shù)討論會(huì)

A Combined Numerical and Experimental Investigation of Transition in a Laminar Separation Bubbleication of small unsteady disturbances by means of phase-locked PIV. The role of unsteady disturbances with and without controlled spanwise variation in the occurring mechanism of transition are examined in detail. Observations for the development of small disturbances are cornpared to predictions from linear stability theory.

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