> @User thanks for the details, that's correct. I have been using QUICK for advection in OpenFOAM and seems to work well. All the other terms are second order. What's your setup? @User For resolved LES? Gauss linear, leastSquares, and CrankNicolson/RK4, but I dont use PISO, and I use a mixed lagrangian smagorinsky model. For the rest of cases, I go with IDDES SA. BTW, QUICK is also second-order scheme when used for the advection term.