AFiD code

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 here here and the GPU version here.

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 on this research line can be found here.
FIGURE MISSING
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.

FIGURE MISSING
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. FIGURE MISSING
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

FIGURE MISSING
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)