CO-VO test-case for DNS/LES codes

CERFACS has tested some of the codes available in France and you are welcome to look at results but also to repeat the same tests and send us the results. We will incorporate them in the web site. The document referenced below provides all information to repeat the test which is extremely fast and simple.

 

CODES WITH THEIR NUMERICAL INGREDIENTS

AVBP : Temporal and spatial scheme: Taylor–Galerkin finite-element, third order in space and time - No artificial viscosity

elsA : Temporal scheme : explicit six-stage Runge-Kutta algorithm, second order - Spatial scheme : sixth order compact finite-volume scheme - Use of a compact filter operator every 100 iterations - No artificial viscosity

LBM Standard : Solver LEOPARD (80x80 mesh) - Spatio-temporal scheme: standard collide and stream algorithm (second order) - Lattice: D2Q9 & Collision operator: BGK Equilibrium distribution function expanded up to the 3rd order

LBM Refined : Solver LEOPARD (160x160 mesh) - Spatio-temporal scheme: standard collide and stream algorithm (second order) - Lattice: D2Q9 & Collision operator: BGK Equilibrium distribution function expanded up to the 3rd order

JAGUAR : Spectral Difference with polynomial of order 4 - Riemann solver : Roe - Explicit time integration : Runge-Kutta 6 steps - No artificial viscosity or filtering added

Leslie : Temporal scheme : predictor-Corrector, second order - Spatial scheme : fourth order central - Use of a compact filter (6th order accuracy, alpha=0.4) - No artificial viscosity

NTMIX : Temporal scheme : explicit six-stage Runge-Kutta algorithm, third order - Spatial scheme : : sixth order Lele Derivative - No artificial viscosity

OpenFoam : Temporal scheme : Euler backward, implicit second order backward-differencing - Spatial scheme : cubic corrected, centered fourth order scheme - Artificial viscosity: 1.25e-3

YALES : Temporal scheme : TFV4A, fourth order time integration - Spatial scheme : central finite-volume schemes of the fourth order - Linear Poisson solver : Deflated PCG (1.e-8) - Artificial viscosity : 0.2

SPARK-LES : Temporal scheme : explicit third-order Runge-Kutta temporal scheme - Spatial scheme : compact (Padè) centered fourth-order finite-volume scheme - No artificial viscosity

 

CCMPARISON OF THE DIFFERENT CODES
 
 

Published on  September 7th, 2020