CUED Publications database

Applications of the dynamic mode decomposition

Schmid, PJ and Li, L and Juniper, MP and Pust, O (2011) Applications of the dynamic mode decomposition. Theoretical and Computational Fluid Dynamics, 25. pp. 249-259. ISSN 0935-4964

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Abstract

The decomposition of experimental data into dynamic modes using a data-based algorithm is applied to Schlieren snapshots of a helium jet and to time-resolved PIV-measurements of an unforced and harmonically forced jet. The algorithm relies on the reconstruction of a low-dimensional inter-snapshot map from the available flow field data. The spectral decomposition of this map results in an eigenvalue and eigenvector representation (referred to as dynamic modes) of the underlying fluid behavior contained in the processed flow fields. This dynamic mode decomposition allows the breakdown of a fluid process into dynamically revelant and coherent structures and thus aids in the characterization and quantification of physical mechanisms in fluid flow. © 2010 Springer-Verlag.

Item Type: Article
Uncontrolled Keywords: Arnoldi method Dynamic mode decomposition Experimental fluid dynamics Iterative techniques
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:21
Last Modified: 08 Dec 2014 02:10
DOI: 10.1007/s00162-010-0203-9