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 language | English |
|---|---|
| Title of host publication | 13th European Turbulence Conference (ETC13) 12–15 September 2011, Warsaw |
| Publisher | IOP Publishing |
| Number of pages | 5 |
| Volume | 318 |
| Edition | SECTION 4 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | European Turbulence Conference 2013 - Lyon, France Duration: 1 Sept 2013 → 4 Sept 2013 Conference number: 14th |
Publication series
| Name | Journal of Physics: Conference Series |
|---|---|
| Publisher | IOP Publishing |
| ISSN (Print) | 1742-6588 |
Conference
| Conference | European Turbulence Conference 2013 |
|---|---|
| Abbreviated title | ETC 2013 |
| Country/Territory | France |
| City | Lyon |
| Period | 1/09/13 → 4/09/13 |
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