output
20152020
most citedDe-Biasing the Dynamic Mode Decomposition for Applied Koopman Spectral Analysis

324 citations

8 papers

cs.CE2020

A Geometrically Exact Continuum Framework for Light-Matter Interaction in Photo-Active Polymers I. Variational Setting

M Mehnert, W Oates, P Steinmann

Molecular photo-switches as, e.g., azobenzene molecules allow, when embedded into a polymeric matrix, for photo-active polymer compounds responding mechanically when exposed to lig…

physics.flu-dyn2020★ 28 cited

Spectral Analysis Modal Methods (SAMMs) using Non-Time-Resolved PIV

Yang Zhang, Louis N. Cattafesta, Lawrence Ukeiley

We present spectral analysis modal methods (SAMMs) to perform POD in the frequency domain using non-time-resolved Particle Image Velocity (PIV) data combined with unsteady surface…

cond-mat.other2020★ 6 cited

A cryogenic-helium pipe flow facility with unique double-line molecular tagging velocimetry capability

Hamid Sanavandi, Shiran Bao, Yang Zhang +3

Cryogenic helium-4 has extremely small kinetic viscosity, which makes it a promising material for high Reynolds () number turbulence research in compact laboratory apparatuses.…

physics.flu-dyn2019★ 10 cited

Unscented Kalman filter (UKF) based nonlinear parameter estimation for a turbulent boundary layer: a data assimilation framework

Zhao Pan, Yang Zhang, Jonas P. R. Gustavsson +2

A turbulent boundary layer is an essential flow case of fundamental and applied fluid mechanics. However, accurate measurements of turbulent boundary layer parameters (e.g., fricti…

physics.flu-dyn2018★ 28 cited

Active attenuation of a trailing vortex inspired by a parabolized stability analysis

Adam M. Edstrand, Yiyang Sun, Peter J. Schmid +2

Designing effective control for complex three-dimensional flow fields proves to be non-trivial. Oftentimes, intuitive control strategies lead to suboptimal control. To navigate the…

physics.flu-dyn2017★ 65 cited

Network-theoretic approach to sparsified discrete vortex dynamics

Aditya G. Nair, Kunihiko Taira

We examine discrete vortex dynamics in two-dimensional flow through a network-theoretic approach. The interaction of the vortices is represented with a graph, which allows the use…

physics.comp-ph2015★ 42 cited

A stable fluid-structure-interaction solver for low-density rigid bodies using the immersed boundary projection method

Uǧis Lācis, Kunihiko Taira, Shervin Bagheri

Dispersion of low-density rigid particles with complex geometries is ubiquitous in both natural and industrial environments. We show that while explicit methods for coupling the in…

physics.flu-dyn2015★ 324 cited

De-Biasing the Dynamic Mode Decomposition for Applied Koopman Spectral Analysis

Maziar S. Hemati, Clarence W. Rowley, Eric A. Deem +1

The Dynamic Mode Decomposition (DMD)---a popular method for performing data-driven Koopman spectral analysis---has gained increased adoption as a technique for extracting dynamical…