Computing Infrastructure

The code

This is a Direct Numerical Simulation code for the compressible Navier-Stokes equations. The linear stability analysis (LST) is done by a Jacobian-free time-stepping algorithm.

The main features are listed below:

  • Structured mesh (2D or 3D)
  • Mesh stretching to concentrate nodes in the regions of interest
  • 4th order Runge-Kutta for the time-stepping
  • 4th order spectral-like spatial differentiation
  • 10th order spatial anti-aliasing filter
  • Temporal low-pass filter (SFD) to allow reaching a base-flow even ate unstable conditions
  • Buffer-zones at the open boundaries
  • Domain decomposition for parallel execution

Available here.

Computational Resources

Currently, the group has 4 servers of its own, 3 of which are for use in numerical simulations, totaling 128 physical cores and 256 threads, in addition to a high processing power gpu.

Finally, it also has its own storage server, intended to keep the data obtained in the experiments.

GATT has access to three high-performance clusters, expanding the group’s computational capacity exponentially, the three of which are:

Results