1. //
  2. Start
  3. //
  4. Projects
  5. //
  6. Trajectory-based Lagrangian approaches f...
  7. //

Trajectory-based Lagrangian approaches for the extraction and characterization of coherent structures in turbulent convection

Project: Research

Project participants

Description

Turbulent fluid flows often exhibit large-scale, long-lived dynamical structures that have a crucial impact on global transport and mixing. The origin and dynamics of these superstructures, and their influence on turbulent flow properties are far from being understood. The Priority Programme aims at arriving at a comprehensive characterization and understanding of turbulent superstructures in an interdisciplinary effort. To this end, there is a need for mathematical descriptions of coherent structures in fluid motion and for corresponding efficient and reliable numerical methods for their identification, extraction and tracking, as well as for the quantification of the underlying transport processes. In this project, we will develop mathematically rigorous computational approaches to approximate and characterize coherent structures in turbulent flows. For this, we will make use of concepts from dynamical systems and ergodic theory as well as data mining. In particular, the computational methods will be tailored to directly work with Lagrangian particle trajectories, such as obtained from experiments involving particle tracking or from a particle model in direct numerical simulations. Central tools will be a transfer operator-based framework and spatio-temporal clustering schemes. They will allow us to analyze the emergence and dynamics of superstructures in three-dimensional turbulence. In cooperation with our interdisciplinary project partners within the Priority Programme, we will in particular study coherent behavior in turbulent convection, but also in other systems.
StatusFinished
Period01.09.16 → 31.12.19
Linkshttp://gepris.dfg.de/gepris/projekt/316204571
http://www.tu-ilmenau.de/de/turbspp/

Activities

Research outputs

Links

Recently viewed

Publications

  1. OH-radical reactivity and direct photolysis of triphenyltin hydroxide in aqueous solution
  2. Multiplexed supply of a MISO wireless power transfer system for battery-free wireless sensors
  3. Comparing self-reported and O*NET-based assessments of job control as predictors of self-rated health for non-Hispanic whites and racial/ethnic minorities
  4. Chasing the difference
  5. Give and take frames in shared-resource negotiations
  6. Intrinsic, instrumental and relational values behind nature’s contributions to people preferences of nature visitors in Germany
  7. Lean Social Media Communication Strategies for SMEs
  8. Multitrait-multimethod-analysis
  9. Concern with COVID-19 pandemic threat and attitudes towards immigrants
  10. Application of crystal plasticity to modeling the deformation behavior of sheet metal mesocrystals
  11. Comparative effectiveness of three versions of a stepped care model for insomnia differing in the amount of therapist support in internet-delivered treatment
  12. A robust cascade sliding mode control for a hybrid piezo-hydraulic actuator in camless internal combustion engines
  13. Compression behaviour of wire + arc additive manufactured structures
  14. Resilient Privacy Preservation Through a Presumed Secrecy Mechanism for Mobility and Localization in Intelligent Transportation Systems
  15. The persistent decline in unionization in Western and Eastern Germany, 1980-2004
  16. Introduction of non-native Douglas fir reduces leaf damage on beech saplings and mature trees in European beech forests
  17. Plant functional trait response to environmental drivers across European temperate forest understorey communities
  18. Study of intrinsic and extrinsic size effects on shear bands in metallic glasses
  19. Model predictive control of transistor pulse converter for feeding electromagnetic valve actuator with energy storage
  20. Pathways to energy transition
  21. Drivers of above-ground understorey biomass and nutrient stocks in temperate deciduous forests
  22. The Impact of Power Distance Orientation on Recipients' Reactions to Participatory Versus Programmatic Change Communication
  23. Effect of Temperature and Strain Rate on Formability of Titanium Alloy KS1.2ASN
  24. Addendum to L. Lauwers and L. Van Liedekerke, “Ultraproducts and aggregation"
  25. Humane Orientation as a New Cultural Dimension of the GLOBE Project:
  26. Processability of Mg-Gd Powder via Friction Extrusion
  27. DAS STATISCHE SFB 3-MIKROSIMULATIONSMODELL - KONZEPTION UND REALISIERUNG MIT EINEM RELATIONALEN DATENBANKSYSTEM.
  28. Minimization of answer distortion in personality questionnaires
  29. Drivers of intraspecific trait variation of grass and forb species in German meadows and pastures
  30. A short review on diffusion coefficients in magnesium alloys and related applications
  31. Less is sometimes more
  32. Deformation by design
  33. Linguistically Responsive Teaching in Multilingual Classrooms
  34. Risk preferences under heterogeneous environmental risk
  35. Prospective material flow analysis of the end-of-life decommissioning
  36. Responsible Artificial Intelligence Systems
  37. Soil chemical legacies trigger species-specific and context-dependent root responses in later arriving plants
  38. The Relationship of Environmental and Economic Performance at the Firm Level
  39. AN INVESTIGATION OF LENGTH ESTIMATION SKILLS OF HIGH SCHOOL STUDENTS WITH MILD INTELLECTUAL DISABILITY
  40. Investigation on Flexible Coils Geometries for Inductive Power Transmission Systems
  41. Almost-invariant sets and invariant manifolds
  42. Plant diversity effects on aboveground and belowground N pools in temperate grassland ecosystems
  43. Influence of grid-connected solar inverters and mains monitoring systems on the spectral grid impedance
  44. Residual stresses of the as-cast Mg-xCa alloys with hot sprues by neutron diffraction
  45. Microstructural evolution of Mg–14Gd–0.4Zr alloy during compressive creep
  46. The Assessment of Substitution Through Event Studies-An Application to Supply-Side Substitution in Berlin's Rental Market*
  47. Tundra Trait Team
  48. Local perceptions as a guide for the sustainable management of natural resources