Figure 1
From: Sparse tensor phase space Galerkin approximation for radiative transport
Experiment 1: Convergence in incident radiation with full and sparse phase space Galerkin approximation. Reference resolution was Lref=6/Nref=6. Reference slopes provided as visual aids only. Even with the lowest order sparse tensor phase space Galerkin discretization, the savings in DoFs to reach engineering accuracy of 1%–10% in the H1 error is about an order of magnitude.