On the decrease of intermittency in decaying rotating turbulence

Details On the decrease of intermittency in decaying rotating turbulence On the decrease of intermittency in decaying rotating turbulence

2008-05-15

arxiv.org/abs/0805.2182v1

Phys. Fluids 20, 071702 (2008).

Physics

Fluid Dynamics

5 pages, 5 figures. In revision for Phys. Fluids Letters

Scientific paper

10.1063/1.2949313

The scaling of the longitudinal velocity structure functions, $S_q(r) = < | \delta u (r) |^q > \sim r^{\zeta_q}$, is analyzed up to order $q=8$ in a decaying rotating turbulence experiment from a large Particle Image Velocimetry (PIV) dataset. The exponent of the second-order structure function, $\zeta_2$, increases throughout the self-similar decay regime, up to the Ekman time scale. The normalized higher-order exponents, $\zeta_q / \zeta_2$, are close to those of the intermittent non-rotating case at small times, but show a marked departure at larger times, on a time scale $\Omega^{-1}$ ($\Omega$ is the rotation rate), although a strictly non-intermittent linear law $\zeta_q / \zeta_2 = q/2$ is not reached.

Affiliated with

Also associated with

No associations

Rating

On the decrease of intermittency in decaying rotating turbulence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the decrease of intermittency in decaying rotating turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the decrease of intermittency in decaying rotating turbulence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-508722