Investigation of coherent structures and dynamics using POD and DMD of a separated airfoil subjected to ZNMF jet forcing

N.A. Buchmann, V. Kitsios, C. Atkinson, J. Soria

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

2 Citations (Scopus)

Abstract

Proper Orthogonal Decomposition (POD) and Dynamic Mode
Decomposition (DMD)are applied to the unsteady separated flowfield over aNACA-0015 airfoil with periodic zero-net-mass-flux (ZNMF) jet forcing at the leading edge at an angle of attack α = 18o and chord based Reynolds number of Re = 3 × 104. This study presents experimental data for the forced flow case and recovers the dominant coherent structures and temporal characteristics that describe the evolution of the velocity perturbation. The dominant frequencies are identified by the DMD eigenvalues and the corresponding spatialmodes are compared to the dominant POD modes.
Original languageEnglish
Title of host publicationInstability and Control of Massively Separated Flows: Proceedings of the International Conference on Instability and Control of Massively Separated Flows, held in Prato, Italy, from 4-6 September 2013
EditorsVassilis Theofilis, Julio Soria
Place of PublicationCham Switzerland
PublisherSpringer
Pages33 - 38
Number of pages6
ISBN (Print)9783319062594
DOIs
Publication statusPublished - 2015

Cite this

Buchmann, N. A., Kitsios, V., Atkinson, C., & Soria, J. (2015). Investigation of coherent structures and dynamics using POD and DMD of a separated airfoil subjected to ZNMF jet forcing. In V. Theofilis, & J. Soria (Eds.), Instability and Control of Massively Separated Flows: Proceedings of the International Conference on Instability and Control of Massively Separated Flows, held in Prato, Italy, from 4-6 September 2013 (pp. 33 - 38). Springer. https://doi.org/10.1007/978-3-319-06260-0_4