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A partially averaged Navier–Stokes method with a new expression of  f   k   based on the rotation-corrected energy spectrum is proposed. It is coupled with the shear-stress transport turbulence model to simulate two typical rotating flows: rotating channel flow and flow in a centrifugal pump impeller. The results of two traditional energy spectrum-based  f   k   expressions (ES1 and ES2) and DNS/experimental results are used for comparison. The results show that the  f   k   distribution predicted based on the rotation-corrected energy spectrum is more reasonable. In the region with enhanced turbulence, more turbulence scales exist, such as the pressure side in the rotating channel flow, where the  f   k   value is low and more turbulence scales are resolved. While in the region with suppressed turbulence, fewer turbulence scales exist, such as the suction side, where the  f   k   value is relatively high. The model with a new  f   k   expression can produce better results since it can give a more reasonable  f   k   distribution. At the same time, the new model is more efficient since it shows better calculation performance with the same mesh scale and low cost with comparable calculation performance.

A PANS Method Based on Rotation-Corrected Energy Spectrum for Efficient Simulation of Rotating Flow