Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Vela-Martín Alberto alberto.vela.martin@zarm.uni-bremen.de 0000-0003-4561-8683 Avila Marc marc.avila@zarm.uni-bremen.de 0000-0001-5988-1090 2024 Predictability of decay events in transitional wall-bounded flows dataset https://doi.org/10.1594/PANGAEA.969138 2024-07-03T09:04:55 Extreme events in turbulent flows are in general linked with sudden changes in the dynamics of the system. Despite the increasing interest in modelling these events, their predictability remains largely unexplored. Here we focus on the case of sudden turbulence/chaos decay in pipe flow and in a reduced-order model of shear flows (Moehlis, Faisst and Eckhardt,2004). We study the predictability of decay events with massive ensembles of simulations. For this purpose we introduce a new pseudo-spectral GPU code to perform fast simulations of turbulent pipe flow and describe a methodology to characterize predictability of decay events using the results of the ensembles of simulations. We report the decrease of predictability as one goes back in time with respect to a decay event, and show that this decrease does not need to be monotonic. Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Vela-Martín Alberto alberto.vela.martin@zarm.uni-bremen.de 0000-0003-4561-8683 Avila Marc marc.avila@zarm.uni-bremen.de 0000-0001-5988-1090 2024 Predictability of decay events in transitional wall-bounded flows Journal of Physics: Conference Series 2753 https://doi.org/10.1088/1742-6596/2753/1/012009 12009 European Research Council ERC https://doi.org/10.13039/501100000781 ERC-AdG-101018287 European Research Council under the Caust grant 57 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Binary Object Binary Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Binary Binary Object (File Size) Binary (Size) Bytes Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Binary (Size) [Bytes] Figure Fig Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Fig Title Title Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Title File name File name Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 File name Variable Variable variable Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Variable File format File format Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 File format Description Description description Numerical simulated Morón Daniel daniel.moron@zarm.uni-bremen.de 0000-0001-7057-0082 Description CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels ProcLevel2 PANGAEA data processing level 2 https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_2 citable direct numerical simulation predictability transient chaos transitiononal regime ZARM author105958 author70364 author94274 award3159 curlevel30 funder20666 journal16968 license21 method15014 param108501 param146419 param16143 param25541 param50001 param7055 param96152 pi105958 proclevel30 ref126759 term2663220 term40710 term71280 term72119 term74315 term74316 term74317