[jomunkas]

Hi,

Are Green Gauss and Weighted Least Squares schemes node or cell based in SU2?


Which would you use for a considerably skewed structural mesh with boundary layers?


Green Gauss is better for high aspect ration cells like in the boundary layer, while Weighted Least Squares are performing better on bad meshes, right?



Syrakos, Alexandros, et al. "A critical analysis of some popular methods for the discretisation of the gradient operator in finite volume methods." Physics of Fluids 29.12 (2017): 127103.


Thanks,

[pcg]

I use Green-Gauss because it is faster.

WLS is purely node based.
GG requires the values at the faces to be integrated, face values are obtained from averaging the solution at the nodes (SU2 uses a median dual grid, so the faces of the dual control volumes are always halfway between nodes).