TURBULENCE STRUCTURES IN WIND/STREAM COMBINED FLOW

Coherent structures in ion temperature gradient turbulence-zonal flow

Turbulence in Optical Flow Fields

In this thesis I will examine the relations between turbulence as found in physical systems and turbulence in optic ow elds. I will record some image sequences of a theoretically well understood turbulent physical system and from these image sequences I will examine the relations between the optic ow of the image sequences and the physical parameters of the turbulent system. I will examine the ...

Turbulence Transition in Pipe Flow

Pipe flow is a prominent example among the shear flows that undergo transition to turbulence without mediation by a linear instability of the laminar profile. Experiments on pipe flow, as well as plane Couette and plane Poiseuille flow, show that triggering turbulence depends sensitively on initial conditions, that between the laminar and the turbulent states there exists no intermediate state ...

Controllability of flow turbulence.

In this paper, we study the controllability of real-world flow turbulence governed by the two-dimensional Navier-Stokes equations, using strategies developed in chaos control. A case of control/synchronization of turbulent dynamics is observed when only one component of the velocity field vector is unidirectionally coupled to a target state, while the other component is uncoupled. Unlike previo...

Coherent structures in wall-bounded turbulence.

The inherent difficulty of understanding turbulence has led to researchers attacking the topic in many different ways over the years of turbulence research. Some approaches have been more successful than others, but most only deal with part of the problem. One approach that has seen reasonable success (or at least popularity) is that of attempting to deconstruct the complex and disorganised tur...