March 17, 2023 at 1:12 pmFAQParticipant
Magnetic reluctance is analogous to electric resistance. While resistance is the ratio of electromotive force and current, reluctance is the ratio of magnetomotive force and magnetic flux. To calculate magnetomotive force of the magnetic circuit you have to draw a line in the middle of the magnetic flux path and integrate H along it, i.e. int(H dot dl). This can be done in Fields Calculator in the following way: Quantity > H Geometry > Line > your_line Vector > Tangent Scalar > Integrate Add > H_dl > OK To calculate magnetic flux through the flux path, you have to draw a line across the path and integrate the normal component of be B over the line, i.e. int(B dot n DA) and multiply the result by the model depth. In the Fields Calculator do the following: Quantity > B Geometry > Line > your_line2 Vector > Normal Scalar > Integrate Number > model_depth Add > B_ndA > OK Finally to obtain the reluctance, divide magnetomotive force by the magnetic flux: H_dl > Copy to Stack B_ndA > Copy to Stack General > /
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