Figure 1From: On torque computation in electric machine simulation by harmonic mortar methodsSketch of the geometry. \(x_{\theta }\) denotes a point in the fixed coordinate system (red) of the stator domain \(\Omega _{S}\), whereas \(\tilde{x}_{\theta }\) denotes a point in the rotated coordinate system (blue) of the rotor domain \(\Omega _{R}\). They are related by \(x_{\theta }=\tilde{x}_{\theta -\alpha }\) where α is the angle of rotationBack to article page