The fast and accurate simulation of electric machines is crucial for prototypical design, with finite element methods being widely used. However, complex simulations can be computationally expensive. Domain decomposition (DD) methods, which split the problem into smaller sub-problems, offer a well-studied solution to accelerate these computations [2]. The approach has particular potential for designing electric machines, where the small spatial dimension of the air gap is important due to its high energy density lending itself naturally to overlapping DD methods, potentially significantly improving convergence speeds.

The project goals are to study the convergence behaviour of the overlapping domain decomposition according to different boundary conditions applied for the subdomain solves. We will implement these algorithms in the MQS FE solver Pyrit [1].