Skip to main navigation Skip to search Skip to main content

Investigation of wall-bounded turbulent flow using Dynamic mode decomposition

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Dynamics mode decomposition (DMD) which is a method to construct a linear mapping describing the dynamics of a given time-series of any quantities is applied to the analysis of a turbulent channel flow. The flow fields are generated by direct numerical simulations for the friction Reynolds number Re τ = 190. The time-series of the flow fields in a short time-interval in the order of the wall-unit time-scale and in a small spatial domain that encloses a single near-wall structure are used as the inputs to DMD. In some datasets, linearly growing modes that seem to contribute to the well-known self-sustained cycle of the flow structures near the wall are detected.

Original languageEnglish
Title of host publication13th European Turbulence Conference (ETC13) 12–15 September 2011, Warsaw
PublisherIOP Publishing
Number of pages5
Volume318
EditionSECTION 4
DOIs
Publication statusPublished - 2011
EventEuropean Turbulence Conference 2013 - Lyon, France
Duration: 1 Sept 20134 Sept 2013
Conference number: 14th

Publication series

NameJournal of Physics: Conference Series
PublisherIOP Publishing
ISSN (Print)1742-6588

Conference

ConferenceEuropean Turbulence Conference 2013
Abbreviated titleETC 2013
Country/TerritoryFrance
CityLyon
Period1/09/134/09/13

Cite this