AFiD code
See the simulation tools highlight for a short summary of AFiD-GPU and its role in the group's research.
In the Physics of Fluids group at the University of Twente we work on the development of a highly parallel open source simulation package that is specifically designed to simulate canonical wall bounded turbulent flows such as Rayleigh-Bénard convection, double diffusive convection, Taylor-Couette flow, channel flow, and plane-Couette. The code is developed in close collaboration with partners at the University of Rome "Tor Vergata", and specialists from SURFsara and NVIDEA Corporation.
AFiD is made available to the entire fluid dynamics community as an open source software package on Github. You can find the CPU version on GitHub and the GPU version on GitHub.
When using a description of the GPU version of the code we please ask that you cite
X. Zhu, E. Phillips, V. Spandan, J. Donners, G. Ruetsch, J. Romero, R. Ostilla-Mónico, Y. Yang, D. Lohse, R. Verzicco, M. Fatica, R.J.A.M. Stevens,
AFiD-GPU: a versatile Navier-Stokes Solver for Wall-Bounded Turbulent Flows on GPU Clusters,
Comput. Phys. Commun. 229, 199-210 (2018)
For a description of the CPU version of the code please cite
E.P. van der Poel, R. Ostilla-Mónico, J. Donners, R. Verzicco, A pencil distributed finite difference code for strongly turbulent wall-bounded flows, Computers and Fluids, 116, 10-16 (2015)
The images below have been generated from simulations performed with AFiD.
Rayleigh-Bénard convection
For corresponding video look at the Physics of Fluids YouTube channel. Further information is available on the thermal convection research page.
Visualisation by: E. van der Poel, R. Ostilla-Monico, see also Visit gallery
Sheared convection
For corresponding video look at the Physics of Fluids YouTube channel.
From: A. Blass, X. Zhu, R. Verzicco, D. Lohse, R.J.A.M. Stevens - Direct numerical simulations of sheared thermal convection, Winner SURFsara visualization Competition 2017
Double diffusive convection
For corresponding video look at the Physics of Fluids YouTube channel.
From: Y. Yang, E. van der Poel, R. Ostilla-Mónico, C. Sun, R. Verzicco, S. Grossmann, D. Lohse, Salt fingers in double diffusive convection bounded by two parallel plates, Submitted to the Gallery of Fluid of Motion in APS-DFD 2014
Taylor-Couette flow
Visualisation by: X. Zhu, radius ratio η=0.714 for Ta=109.
From X. Zhu, R. Verschoof, D. Bakhuis, S. Huisman, R. Verzicco, C. Sun, D. Lohse, Wall roughness induces asymptotic ultimate turbulence, Nature Physics 14, 417–423 (2018)