I have Flux 2022.3. I would like to run a convergence study on the 2D FEM results by comparing between simulations with different average element sizes, in order to estimate the error. I want to compute the L2 Norm between solutions so something like \sqrt( \int_{domain} (An1-An2)^2 dxdy ), where An1 and An2 are two solutions.
Can I export the solution from one flux simulation into another flux simulation so that the solution variable is available for computations? Do I need to sample the solutions on a common 2D grid and then post process in MATLAB?