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Forum: Main CFD Forum

September 9, 2015, 08:14

Replies: 3

Spectral LES solver, 2h waves ( wiggles )

Views: 1,090

Posted By FMDenaro

spectral methods can produce Gibbs phoenomenon in...

spectral methods can produce Gibbs phoenomenon in case of shar gradients...that happens when viscosity is low and not causing difusion to dissipate spurious high wavenumbers. But you wrote that are...

Forum: Main CFD Forum

September 8, 2015, 08:53

Replies: 3

Spectral LES solver, 2h waves ( wiggles )

Views: 1,090

Posted By FMDenaro

generally, that is a sign of a pressure...

generally, that is a sign of a pressure decoupling ... have you checked if you fulfill the divergence-free constraint in each node?

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