Effect of helicity and rotation on the free decay of turbulent flows

Details Effect of helicity and rotation on the free decay of turbulent flows Effect of helicity and rotation on the free decay of turbulent flows

2008-11-26

arxiv.org/abs/0811.4373v1

Physics

Fluid Dynamics

4 pages, 4 figures

Scientific paper

The self-similar decay of energy in a turbulent flow is studied in direct numerical simulations with and without rotation. Two initial conditions are considered: one non-helical (mirror-symmetric), and one with maximal helicity. The results show that, while in the absence of rotation the energy in the helical and non-helical cases decays with the same rate, in rotating flows the helicity content has a major impact on the decay rate. These differences are associated with differences in the energy and helicity cascades when rotation is present. Properties of the structures that arise in the flow at late times in each time are also discussed.

Affiliated with

Also associated with

No associations

Rating

Effect of helicity and rotation on the free decay of turbulent flows 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 Effect of helicity and rotation on the free decay of turbulent flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of helicity and rotation on the free decay of turbulent flows will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-274990