A stochastic perturbation of inviscid flows

Details A stochastic perturbation of inviscid flows A stochastic perturbation of inviscid flows

2005-05-04

arxiv.org/abs/math/0505066v2

Comm. Math. Phys. 266 (2006), no. 3, 631--645

Mathematics

Analysis of PDEs

13 pages, no figures.

Scientific paper

10.1007/s00220-006-0058-5

We prove existence and regularity of the stochastic flows used in the stochastic Lagrangian formulation of the incompressible Navier-Stokes equations (with periodic boundary conditions), and consequently obtain a $\holderspace{k}{\alpha}$ local existence result for the Navier-Stokes equations. Our estimates are independent of viscosity, allowing us to consider the inviscid limit. We show that as $\nu \to 0$, solutions of the stochastic Lagrangian formulation (with periodic boundary conditions) converge to solutions of the Euler equations at the rate of $O(\sqrt{\nu t})$.

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