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Lorentz Force Contribution Feature Issue
Posted 25 août 2025, 00:22 UTC−4 Electromagnetics Version 6.1 0 Replies
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Hi, I would like to ask a question regarding the Lorentz force contribution feature in COMSOL. Theoretically, for a solenoid placed in a uniform background magnetic field, the net force acting on the wire should be zero. However, in my simulation, the computed force is not exactly zero; it typically ranges from about 10^-8 to 10^-10 N. Even after refining the mesh (by reducing the maximum element size), the force does not converge to zero. Furthermore, when I increase the number of turns and the current, the magnitude of the force also increases rather than converging to zero.
I would like to confirm whether this behavior is expected (e.g., due to numerical errors, discretization, or modeling limitations), or if it suggests a possible issue with my setup. Thank you
Hello Albert Thema
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