Approximate Deconvolution Leray Reduced Order Model for Convection-Dominated Flows
Numerical Analysis
2023-08-30 v2 Numerical Analysis
Fluid Dynamics
Abstract
In this paper, we propose a novel ROM stabilization strategy for under-resolved convection-dominated flows, the approximate deconvolution Leray ROM (ADL-ROM). The new ADL-ROM introduces AD as a new means to increase the accuracy of the classical Leray ROM (L-ROM) without degrading its numerical stability. We also introduce two new AD ROM strategies: the Tikhonov and van Cittert methods. Our numerical investigation for convection-dominated systems shows that, when the filter radius is relatively large, the new ADL-ROM is more accurate than the standard L-ROM. Furthermore, the new ADL-ROM is less sensitive with respect to model parameters than L-ROM.
Cite
@article{arxiv.2307.10817,
title = {Approximate Deconvolution Leray Reduced Order Model for Convection-Dominated Flows},
author = {Anna Sanfilippo and Ian Moore and Francesco Ballarin and Traian Iliescu},
journal= {arXiv preprint arXiv:2307.10817},
year = {2023}
}