eddy Význam & definice

Příklady eddy

• These larger eddies can stir the fluid more efficiently, thereby reducing concentration fluctuations (see figure 4).

• The presence of active small-scale turbulence appears responsible for the continuing isotropy of the smallest eddies.

• A commonly used procedure to estimate turbulent diffusion times is in terms of enhanced turbulent (eddy) diffusivities.

• As soon as t* = 1.5, the velocities become sufficiently high in the wake for a pair of secondary eddies to develop.

• In comparing with figure 6, we observe that details of the two spectral eddy-viscosities differ.

• However, as the eddy did not increase in size further, this rate decreased downstream of the eddy formation.

• For instance, the isotropic eddy viscosity hypothesis does not predict the observed fact that the shear stress and mean velocity gradient vectors have different directions.

• In computing the response function, we want to capture the deformation of the fluid eddies while excluding the simple advection due to a large-scale flow.