1. //
  2. Start
  3. //
  4. Projects
  5. //
  6. Lagrangian aspects of turbulent superstr...
  7. //

Lagrangian aspects of turbulent superstructures: numerical analysis of long-term dynamics and transport properties

Project: Research

Project participants

Description

Turbulent fluid flows often exhibit large-scale, long-lived coherent structures, termed turbulent superstructures. In turbulent shear flows superstructures are characterized by elongated regions of streamwise velocity fluctuations, whereas in turbulent convection they are identified as patterns in the time-averaged velocity or temperature fields. While clearly observable in the Eulerian frame of reference, the origin and dynamics of these superstructures and their impact on turbulent flow properties and transport processes are far from being understood. To this end, there is a need for mathematical descriptions of turbulent superstructures beyond the Eulerian specifications.In the first funding period, trajectory-based methods have been developed for the study of coherent behavior in the Lagrangian frame of reference, using concepts from dynamical systems and ergodic theory as well as data science. In the second phase of the project, we will continue to develop and apply computational approaches to approximate and characterize Lagrangian superstructures in 3D turbulent flows. Our focus will be on (i) the analysis of the long-term dynamics of superstructures including the prediction of bifurcations, (ii) attempting a systematic understanding of the relation between Eulerian and Lagrangian superstructures, and (iii) a characterization of their transport properties. In cooperation with our interdisciplinary project partners within the Priority Programme, we will study the Lagrangian aspects of turbulent superstructures both in Rayleigh-Bénard convection and in turbulent shear flows.
StatusFinished
Period09.12.19 → 30.06.23
Linkshttps://gepris.dfg.de/gepris/projekt/316204571

Activities

Research outputs

Links

Recently viewed

Researchers

  1. Valentina Draht

Publications

  1. Arbeitspapiere
  2. Impacts of drought and nitrogen addition on Calluna heathlands differ with plant life-history stage
  3. Memória, internet e aprendizagem turbo
  4. Observational natural history and morphological taxonomy are indispensable for future challenges in biodiversity and conservation
  5. Uncharted risk measures for the management of sustainable mining
  6. Entleerung des ländlichen Raumes
  7. Green Big Data – eine Green IT/Green IS Perspektive auf Big Data
  8. Biotic and abiotic degradation of S-metolachlor and its commercial product Mercantor Gold® in aqueous media
  9. Hamburg Maschine_revisited
  10. From grief to hope in conservation
  11. Digitalisierung – Arbeit – Bildung
  12. Overcome procrastination
  13. Die E-Evidence-Verordnung
  14. Actor Analysis in Case Studies for (regional) Sustainable Development
  15. Time Series Explorer
  16. Walter Benjamin
  17. Public Value
  18. Sprachliche Heterogenität im Musikunterricht
  19. James Matthew Barrie, Peter Pan or The boy who would not grow up
  20. Green technology innovation
  21. Co jsou žaloby ve veřejném zájmu a k čemu jsou dobré?
  22. Estimation of risk measures on electricity markets with fat-tailed distributions
  23. Längsschnittdaten und Mehrebenenanalyse
  24. Apel, Hans
  25. Product diversification and stability of employment and sales
  26. Development and application of a simultaneous SPE-method for polycyclic aromatic hydrocarbons (PAHs), alkylated PAHs, heterocyclic PAHs (NSO-HET) and phenols in aqueous samples from German Rivers and the North Sea
  27. Mimesis als Grenzüberschreitung
  28. PROVENCE - An Eight Issue Magazine Dedicated to Hobbies
  29. How Germany is phasing out lignite
  30. Captopril and its dimer captopril disulfide
  31. Der RADIUS eines Verlages
  32. Kontrolle und Komplexität in der Computertechnologie
  33. Die Balanced Scorecard: Chancen und Gefahren - oder: wie falsch darf eine Balanced Scorecard sein?
  34. Totgesagte leben länger
  35. Wer arbeitet wann ?
  36. Inequality Regimes in Coworking Spaces