- Letter
Material surfaces in stochastic flows: Integrals of motion and intermittency
Phys. Rev. E 107, L023101 – Published 23 February, 2023
DOI: https://doi.org/10.1103/PhysRevE.107.L023101
Abstract
We consider the line, surface, and volume elements of fluid in stationary isotropic incompressible stochastic flow in -dimensional space and investigate the long-time evolution of their statistic properties. We report the discovery of a family of stochastical integrals of motion that are universal in the sense that their explicit form does not depend on the statistics of velocity. Only one of them has been discussed previously.
Physics Subject Headings (PhySH)
- Dynamo theory
- Homogeneous turbulence
- Intermittency
- Isotropic turbulence
- Random walks
- Three-dimensional turbulence
- Turbulence
- Two-dimensional turbulence
- Stochastic dynamical systems
- Lagrangian flow field
- Large deviation & rare event statistics
- Random matrix theory
- Statistical hydrodynamics
- Stochastic analysis
- Stochastic differential equations