Investigation on Rotation/Curvature Correction Methods of SST Turbulence Model in Numerical Simulation of Axial Compressor
DOI:
https://doi.org/10.54097/hset.v77i.14355Keywords:
Axial compressor, numerical simulation, computational fluid dynamics.Abstract
Turbulence models which are widely used in engineering applications usually need correction in axial compressor CFD simulations due to the intense rotation of the system. In order to understand the applicability of rotation-curvature correction methods of turbulence models in numerical simulation of axial compressors, several correction methods were implemented based on SST turbulence model on an inhouse CFD solver ASPAC and numerical simulations were carried out on a transonic compressor Rotor37. The results shows that the rotation/curvature correction models mainly affect the corner separation on the suction surface of the blade. More specifically, SST-Helicity model reduces corner separation at the suction surface and performs well at conditions with relatively large mass flow rate. Results from SST-CC and SST-Hellsten model are close to but slightly worse than that of standard SST model in terms of agreement with experimental data. In summary, detailed assessment and discussions on different rotation/curvature corrections of turbulence models were carried out based on numerical results of a transonic compressor in this paper, which may contribute to the choice of turbulence models and investigation of turbulence modeling and model correction methods in axial compressor simulations in the future.
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