High Accuracy Torque Calculation for a Rotating Machine Using Adaptive Meshing

Abstract

This paper proposes a new adaptive meshing technique for the analysis of rotating machines. The meshes of the rotor and the stator are combined by filling the gap between them with new elements. By taking the geometric periodicity and the symmetry of the machine into account the technique is effective in reducing the numerical error in the torque calculation due to mesh irregularities. The paper also describes a method which uses the smoothness of the nodal force distribution as a criteria for mesh refinement during the adaptive meshing. Some results using the method are presented.