Evolve Filter Stabilization Reduced-Order Model for Stochastic Burgers Equation

oleh: Xuping Xie, Feng Bao, Clayton G. Webster

Format: Article
Diterbitkan: MDPI AG 2018-10-01

Deskripsi

In this paper, we introduce the evolve-then-filter (EF) regularization method for reduced order modeling of convection-dominated stochastic systems. The standard Galerkin projection reduced order model (G-ROM) yield numerical oscillations in a convection-dominated regime. The evolve-then-filter reduced order model (EF-ROM) aims at the numerical stabilization of the standard G-ROM, which uses explicit ROM spatial filter to regularize various terms in the reduced order model (ROM). Our numerical results are based on a stochastic Burgers equation with linear multiplicative noise. The numerical result shows that the EF-ROM is significantly better than G-ROM.