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Turbulence in the boundary layer

This research group is formed around the EU-funded project trainABL (“Turbulence-Resolving approaches to the  intermittently turbulent atmospheric boundary layer”). 

We use turbulence-resolving methods at the smallest scale in combination with observations and large-eddy simulation to eventually overcome the gap between high-resolution direct numerical simulation and the geophysical limit of high- Reynolds-number boundary layers.


 

Research Fields:

  • Numerical Simulation of Turbulence (Direct Numerical Simulation, DNS and Large-Eddy Simulation, LES)

  • Stably stratified Planetary Boundary Layers (extreme stratification)

  • Maintenance and intermittency of turbulence in stratified conditions

  • Turbulent mixing parameterizations

  • Surface-Atmosphere Coupling

Research Focus: 

  • transitional turbulence and large-scale intermittency
  • boundary layers under extreme conditions
  • unification of turbulence simulation approaches 
  • bridging the gap between small-scale turbulence modelling, atmospheric observation and large-scale models 

Research Methods: 

Projects: 

Selected Publications:

  • 2019: C. Ansorge, Scale-dependence of atmosphere-surface coupling through similarity theory, Boundary-Layer Meteorol (172):1-27, doi:10.1007/s10546-018-0386-y
  • 2018: Bou-Zeid, Elie, Xiang Gao, Cedrick Ansorge, and Gabriel G Katul, On the Role of Return to Isotropy in Wall-Bounded Turbulent Flows with Buoyancy. J Fluid Mech (856):61-78 doi:10.1017/jfm.2018.693
  • 2018: I. G. H. van Hooijdonk, H. Clercx, C. Ansorge and B. J. H. van de Wiel, Parameters for the collapse of turbulence in the stratified plane Couette flow, J Atmos Sci (75)doi:10.1175/JAS-D-17-0335.1
  • 2017: B. Meyer, C. Ansorge and T. Nakagaki, The role of noise in self-organized decision making by True Slime Mold Polycaephalum Physarum, PLOS one (0172933) doi:10.1371/journal.pone.0172933
  • 2016: C. Ansorge and J. P. Mellado, Analysis of external and global intermittency in the logarithmic layer of Ekman flow, J Fluid Mech (805), 611-635 doi:10.1017/jfm.2016.534

Office hours / contact: 

during the COVID-19 pandemic: by appointment only