What is turbulence, what is fossil turbulence, and which ways do they cascade?

Details What is turbulence, what is fossil turbulence, and which ways do they cascade? What is turbulence, what is fossil turbulence, and which ways do they cascade?

2012-03-23

arxiv.org/abs/1203.5819v1

Physics

Fluid Dynamics

8 pages, 4 figures, submitted to Journal of Fluid Mechanics

Scientific paper

Turbulence is defined as an eddy-like state of fluid motion where the inertial-vortex forces of the eddies are larger than any other forces that tend to damp the eddies out. By this definition, turbulence always cascades from small scales (where the vorticity is created) to larger scales (where other forces dominate and the turbulence fossilizes). Fossil turbulence is any perturbation in a hydrophysical field produced by turbulence that persists after the fluid is no longer turbulent at the scale of the perturbation. Fossil turbulence patterns and fossil turbulence waves preserve and propagate information about previous turbulence to larger and smaller length scales. Big bang fossil turbulence patterns are identified in anisotropies of temperature detected by space telescopes in the cosmic microwave background. Direct numerical simulations of stratified shear flows and wakes show that turbulence and fossil turbulence interactions are recognizable and persistent.

Affiliated with

Also associated with

No associations

Rating

What is turbulence, what is fossil turbulence, and which ways do they cascade? 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 What is turbulence, what is fossil turbulence, and which ways do they cascade?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and What is turbulence, what is fossil turbulence, and which ways do they cascade? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-473333