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Schwerpunktprogramm Turbulent Superstructures
Deutsche Forschungsgemeinschaft (DFG)
The Senate of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) has established the Priority Programme ,,Turbulent Superstructures" (SPP 1881), which is intended to run for six years. This call invites submissions of proposals for the first three-year funding period starting in 2016.

The classical picture of turbulence is that turbulent fluid motion is characterised by a cascade of vortices and swirls of different sizes that give rise to a featureless and stochastic fluid motion. Our daily experience shows, however, that turbulent flows in nature and technology are often organised in prominent large-scale and long-living structures that can cause extreme fluctuations. The focus of the Priority Programme are patterns whose coherence does not stop at the natural scale, such as the boundary layer height, but extends over much larger scales. When present, superstructures can dominate the global transport of mass, heat and momentum, act as barriers to transport, and increase the variability and fluctuations in the flow.

Currently very little is known about the origins, dynamics, and impact of superstructures on turbulent flow properties. Furthermore, their consequences for the statistical properties of turbulent flows, and their connection to the occurrence of extreme events are poorly understood. The study of superstructures is now possible due to significant advances in measurement techniques, numerical simulation, and mathematical characterisation. Tomographic laser-based measurement techniques can track the dynamics of turbulent structures with unprecedented resolution in space and time. Direct numerical simulations on massively parallel supercomputers have advanced to a level where turbulent flows in extended domains can be simulated at sufficiently high Reynolds numbers and in parameter ranges where superstructures emerge. Efficient methods to characterise dominant vortices and flow structures and to determine the transport across their boundaries as well as their dynamical evolution have been developed in applied mathematics. Computer science provides efficient algorithms for the visualisation of structures in very large data sets.

The aim of the Priority Programme is to integrate the different recent advances to arrive at a comprehensive characterisation and understanding of turbulent superstructures. Projects within the proposal should contribute to several of the following aspects:
· experimental characterisation of superstructures
· direct numerical simulations of turbulent large-scale and superstructures
· Lagrangian and Eulerian methods for detection and identification
· modelling the origin and dynamics of turbulent superstructures
· fast processing and visualisation of large data sets

In order to assist networking between applicants before the deadline for proposals, we ask everybody, who is considering applying within this call, to submit a description of the planned project (max 1 page) by 31 August 2015 to Professor Dr. Schumacher and Dr. Michael Lentze. The summaries will be provided to all potential applicants for information.

Research proposals for the first three-year funding period, to be written in English, are now invited. All proposals should follow the guidelines in DFG forms 50.05 (Priority Programmes, Part B) and 54.01 (Project Proposals). Please include a title page with your name, institution, and the title of your project in your application. The deadline for proposal submission is 25 November 2015.

Further information

Further information on the Priority Programme is available at:

DFG's portal "elan":

Forms and guidelines can be downloaded at:

For further scientific information, please contact the Priority Programme's coordinator:
Prof. Dr. Jörg Schumacher, Technische Universität Ilmenau, Fakultät für Maschinenbau, Fachgebiet Theoretische Strömungsmechanik, 98684 Ilmenau, phone: +49 3677 69-2428, joerg.schumacher@tu-ilmenau.de

For administrative and formal inquiries please contact at the DFG:
Dr. Michael Lentze, phone: +49 228 885-2449, michael.lentze@dfg.de
Dr. Simon Jörres, phone: +49 228 885-2971, simon.joerres@dfg.de
Agnes Küster, phone: +49 228 885-2298, agnes.kuester@dfg.de

Weitere Informationen: