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Monte-Carlo approximations for 2d Navier-Stokes equations with measure initial data
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  • Published: November 2001

Monte-Carlo approximations for 2d Navier-Stokes equations with measure initial data

  • Sylvie Méléard1 

Probability Theory and Related Fields volume 121, pages 367–388 (2001)Cite this article

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Abstract.

We are interested in proving Monte-Carlo approximations for 2d Navier-Stokes equations with initial data u 0 belonging to the Lorentz space L 2,∞ and such that curl u 0 is a finite measure. Giga, Miyakawaand Osada [7] proved that a solution u exists and that u=K* curl u, where K is the Biot-Savartkernel and v = curl u is solution of a nonlinear equation in dimension one, called the vortex equation.

In this paper, we approximate a solution v of this vortex equationby a stochastic interacting particlesystem and deduce a Monte-Carlo approximation for a solution of the Navier-Stokesequation. That gives in this case a pathwise proofof the vortex algorithm introducedby Chorin and consequently generalizes the works ofMarchioro-Pulvirenti [12] and Méléardv [15] obtained in the case of a vortex equation with bounded density initial data.

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Authors and Affiliations

  1. Université Paris 10, MODALX, 200 avenue de la République, 92000 Nanterre France e-mail: sylm@ccr.jussieu.fr, , , , , , FR

    Sylvie Méléard

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  1. Sylvie Méléard
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Received: 6 October 1999 / Revised version: 15 September 2000 / Published online: 9 October 2001

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Méléard, S. Monte-Carlo approximations for 2d Navier-Stokes equations with measure initial data. Probab Theory Relat Fields 121, 367–388 (2001). https://doi.org/10.1007/s004400100154

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  • Issue Date: November 2001

  • DOI: https://doi.org/10.1007/s004400100154

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Keywords

  • Vortex
  • Initial Data
  • Nonlinear Equation
  • Lorentz Space
  • Finite Measure
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