Simulations strategies of the cooling flow for large hydro generators

A methodology has been developed to study the flow in large hydro generators, balancing both the complexity of the flow associated with its large length scale variation and the requirements of the simulations process to ensure a viable approach to the problems, both from the reliability and economical standpoint. This methodology uses a coupling between two different simulations, one global simulation of the rotor and the stator and one detailed simulation of one slot of the stator.