Numerical procedure of 3D flow induced noise modeling in centrifugal pumps is developed by linking the acoustic-vortex computational method of pseudo-sound and noise prediction that earlier was implemented in two dimensional prediction of pressure pulsations and noise and CFD code FlowVision. The 3D CFD–CAA acoustic-vortex method is validated by experiments on axial and centrifugal ventilators. Measurements of pressure pulsations and noise are completed for a wide range of rotation speeds. Further computational tests are made for a centrifugal boiler feed pump stage with and without vane diffuser.

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