Axisymmetric and planar
r-z models for coils, cores and actuators; x-y models for busbars, slots and cross-sections.
2D fields, solved in the browser.
Axisymmetric and planar magnetostatic and eddy-current problems from templates, with flux plots and the quantities engineers actually need.
What does the 2D Field Solver do?
The 2D Field Solver is a finite-element solver for low-frequency magnetic problems that runs from the browser. It handles axisymmetric (r-z) and planar (x-y) geometries, both magnetostatic and time-harmonic eddy-current, and returns flux plots, inductance, force and loss densities. Templates cover common cases such as solenoids, pot cores, shields and conductors over plates; quick solves return directly and finer meshes or frequency sweeps run as background jobs.
Features
Magnetostatic and eddy current
DC fields or time-harmonic eddy currents with skin depth resolved in conductors.
Frequency sweeps
Run the same model across frequency as a background job to see resistance and inductance versus frequency.
Templates
Start from a ready geometry and change dimensions and materials instead of drawing from scratch.
Limits
2D only: true 3D geometry belongs in the 3D Low-frequency Fields module. Low-frequency (quasi-static) physics; no wave propagation.
Every module ships with reference cases that run in our CI. See validation for how results are checked.
Related modules
3D Low-frequency Fields
3D finite-element simulation of actuators, solenoids, eddy currents and magnetic shielding in the browser, checked against the TEAM Problem 7 benchmark.
Induction Heating & Eddy-current NDT
Simulate induction heating of billets, tubes and strips, eddy-current probe impedance versus lift-off, layers and conductivity, and magnetic shielding effectiveness, in the browser.
Magnetics Designer
Design inductors and transformers in the browser: pick a core and material, size the winding, and get core and winding loss, leakage inductance, saturation margin and temperature rise.
Try the 2D Field Solver.
Frequently asked questions
Is this an online alternative to FEMM?
It covers the same class of problems as FEMM (2D axisymmetric and planar magnetostatics and eddy currents) but runs in the browser on any operating system, with no install.
Can it compute inductance and force?
Yes. Results include inductance, force and loss figures alongside the flux plot.
How big a model can I solve?
Quick qualities solve directly in seconds; finer meshes and sweeps run as background jobs.