Performance of a Newton-Krylov-Schur Algorithm for the Numerical Solution of the Steady Reynolds-Averaged Navier-Stokes Equations (Invited)

Computational results are presented for steady two-dimensional turbulent flows modelled through the Reynolds-averaged Navier-Stokes equations using the parallel NewtonKrylov-Schur finite-difference flow solver known as Diablo. The focus of this paper is to present performance results for the flow solver on three families of NACA 0012 grids for some specified operating conditions as part of a discussion group on turbulent flow computations. The results are presented in terms of computing time in TauBench work units as a function of the numerical error as the mesh is refined. Results for two three-dimensional cases are also presented.