I am following along with the “Eigenvalue problem” example in the 1.7.1 tutorial for Perfectly Matched Layers and have experimented with a couple of different geometries. Moreover, I know how to solve a 2d helmholtz on a circle and can obtain a resonance value in NGSolve that corresponds to the resonance value I obtain analytically.
My question is: does the software allow for me to access the numerical solution to the Helmholtz for a given resonance value? I’m hoping to be able to evaluate u at various point within the domain but am unsure how to proceed.
Thank you for any help