Implementation of a new simulation strategy for a cooling study of large hydro generators

This presentation gives an overview of fluid dynamics in electrical machines. A new computing model for electrical machines is presented which is basically derived from a pole section model (PSM). The reduced model, also called a "slot sector model" (SSM), is a faster calculating method than the state-of-the-art PSM. The required fundamentals of the method and the grid generation are described too. Finally, two PSMs and four SSMs are presented and compared among each other to find the best adjustment of a reduced model.