Chapter 5
Summary

You should be now familiar with the following topics:

5.1 Additional Exercises

  1. Increase the polynomial order and plot the L2 error vs. the polynomial order in a semilogarithmic scale.

  2. Change the projection operator for a fixed polynomial order and look at the error.

  3. Increase the time-step for a fixed polynomial order and look at the error.

  4. If the solver is compiled with the MPI option, then try running the case in parallel with mpirun -np 2.

  5. Change the Projection Operator to Continuous to see the same problem running with a CG solver.

  6. Change the solver type to AdvectionDiffusion and CG to change the problem type. You also need to update the AdvectionType to NonConservative.

Tip: To check the additional settings and parameters that can be used for this solver, check the folder: $NEK/solvers/ADRSolver/Tests/ where you can find several tests associated to the ADR solver.