[Nek5000-users] Project a solution onto a polynomial space

[nek5000-users at lists.mcs.anl.gov]

Hello,


I need to compute some non-linear quantities as part of a post-processing procedure. Because they are non-linear, I will need to do some kind of dealiasing. So far, I know how to map the velocity field onto a finer grid (higher polynomial order) to compute the non-linear quantities. However, I don't know how to project the resulting field onto the original polynomial space.


Note, I want to find the "projection" onto the original space, but not the "interpolation".


Thanks,


Juan Diego
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