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Ergodicity of 3D Leray-alpha model with fractional dissipation and degenerate stochastic forcing

机译:3D LERAY-alpha模型的遍历性与分数耗散和退化随机强制

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摘要

By using the asymptotic coupling method, the asymptotic log-Harnack inequality is established for the transition semigroup associated to the 3D Leray-alpha model with fractional dissipation driven by highly degenerate noise. As applications, we derive the asymptotic strong Feller property and ergodicity for the stochastic 3D Leray-alpha model with fractional dissipation. which is the stochastic 3D Navier-Stokes equation regularized through a smoothing kernel of order theta(1) in the nonlinear term and a theta(2)-fractional Laplacian. The main results can be applied to the classical stochastic 3D Leray-alpha model (theta(1) = theta(2) = 1), stochastic 3D hyperviscous Navier-Stokes equation (theta(1) = theta 2 >= 5/4) and stochastic 3D critical Leray-alpha, model (theta(1) = 1/4, theta(2) = 1).
机译:通过使用渐近耦合方法,为与3D Leray-alpha模型相关联的过渡半组建立了渐近数日志哈尼克拉克不等式,其具有由高度简并噪声驱动的分数耗散。 作为应用,我们通过分数耗散导出随机3D Leray-alpha模型的渐近强子宫和遍历。 这是通过在非线性术语和θ(2) - 毫齿Laplacian中的平滑顺序θ(1)的平滑核心的随机3D Navier-Stokes方程。 主要结果可以应用于经典随机3D Leray-alpha模型(Theta(1)= Theta(2)= 1),随机3D超级vier-stokes方程(Theta(1)= theta 2> = 5/4) 和随机3D临界Leray-alpha,模型(θ(1)= 1/4,θ(2)= 1)。

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