… the 3d version, and can actually converge a nonlinear residual

…n with 3D magnets

… 3D. Integrator approach follows a more straightforward AD approach than the previous integrator, using hand written AD of the MagneticEnergy integrator

…sh and test both

…d 3D. Once it is differentiated, I will rename it to ForceIntegrator and remove the old one. Set it up so that magnetic energy could be computed on a per attribute basis, so you could calculate just the energy in the airgap for example. Now only add the current density integrator to the winding attributes so that it hopefully runs more efficiently

…lize setting attributes

…fully easier to differentiate than ForceIntegrator2

…is differentiated wrt the mesh and the state

…omag integs

…n but didn't end up working)

…make sure differentiation of the 2D cases works correctly

…nce. Added LineSearch abstract class, with a BacktrackingLineSearch implementation. Added tests for RelaxedNewton using BacktrackingLineSearch on a simple 2D Rosenbrock minimization problem

…ify material data in the options dictionary, and handle multiple different nonlinear reluctivity models at once.

…into 2D-magnetostatics

… CG solved the issue we were seeing

…reference to it to address address sanitizer error

…into 2D-magnetostatics

… linear form integrator and tested it

…orModel outputs differentiated and verified

…tiy calc, 2D flux density magnitude calc, and max flux magnitude calcs

…AO. Residual partials wrt current density are a little bit hacky. Need to come up with a real way to take the derivative of an integrator wrt a coefficient, and then the coefficient wrt whatever, but haven't thought of a good way to do it yet

…Working on the DC loss right now, all the integrators seem to work, but when used as an Output there are slight issues. Need to investigate further. I suspect the issue is inside of FunctionalOutput

… 4th order finite difference check as well as the second order check to give confidence to the fact that the finite difference is correct

…or was using a different integration rule than the primal integrator. In testing the derivatives on the motor, realized that I needed to allow sensitivity integrators to be restricted to the same attributes that the primal integrators are restricted to. Make that change by renaming addSensitivityIntegrator to add*SensitivityIntegrator for Domain, InteriorFace, and Bdr integ types. Added pointer arg for optional attributes to restrict sens integrator to. Need to make the same change for residual sensitivity integrators.

…n the field named state, and differentiated it wrt the input state and the mesh

…ption

…tonal output, and included tests for it

…emoved try-catch from AbstractSolvers calcOutput and output sensitivities methods. Previously they would catch and print the what of any exception thrown, now they will not intercept. This is to allow a NotImplementedException to be thrown further up the chain

…ions to be more efficient

…lly on output sensitivity verification

…er residual

…emperature field in magnetostatic solver if it exists

…culations to depend on one peak flux value