Dear everyone,

I am trying to figure out the specific formulation when performing C0Projection, i.e.
If I define m_c0ProjectExp as following

m_c0ProjectExp = MemoryManager<MultiRegions::ContField2D>:: AllocateSharedPtr(m_session,m_graph,"DefaultVar");

Then what is the specific algorithm when perform the following command(all relative options are default)?
m_c0ProjectExp->FwdTrans(var,var_Coeffs);
m_c0ProjectExp->BwdTrans(var_Coeffs,var_smooth);

If I have a discontinuous(across element interface) distribution of var, then what has been done during the above procedure?

Could anyone please recommend me some materials on this? If possible, where can I find this topic on the book "Spectral/hp Element Methods for Computational Fluid Dynamics"

Thank you in advance!

Best wishes,

Jian Yu