Regional Stability Analysis of Transitional Fluid Flows
Fluid Dynamics
2021-10-19 v1 Systems and Control
Systems and Control
Abstract
A method to bound the maximum energy perturbation for which regional stability of transitional fluid flow models can be guaranteed is introduced. The proposed method exploits the fact that the fluid model's nonlinearities are both lossless and locally bounded and uses the axes lengths of the ellipsoids for the trajectory set containment as variables in the stability conditions. Compared to existing approaches, the proposed method leads to an average increase in the maximum allowable energy perturbation of 29% for the Waleffe-KimHamilton (WKH) shear flow model and of 38% for the 9-state reduced model of Couette flow.
Cite
@article{arxiv.2110.08341,
title = {Regional Stability Analysis of Transitional Fluid Flows},
author = {Leonardo F. Toso and Ross Drummond and Stephen R. Duncan},
journal= {arXiv preprint arXiv:2110.08341},
year = {2021}
}
Comments
The paper is composed of 6 pages with 4 figures. It will be submitted to the IEEE Control Systems Letters (L-CSS)