The Harmonic Balance (HB) Method is an entirely new computational approach, offering the best of both worlds specifically for periodic flows. With applications in the compressible domain ranging from aerodynamics to blade-to-blade acoustic interactions in devices such as compressors, turbines, fans and wind turbines, the HB method is a cost effective, accurate and efficient choice for unsteady flows.
Harmonic Balance Method in STAR-CCM+
The HB solver within STAR-CCM+ is designed to provide engineering results for unsteady phenomena at up to 10x faster than full unsteady analysis. The computational cost of the HB simulation is independent of relative blade count and only a single passage mesh is required. This implementation is unique in that it does not freeze the turbulent quantities so simulations will get full use of the our 1 and 2 equation turbulence models. Use of the HB approach allows for aerodynamic stability information to be easily extracted as well as capturing blade row interactions.