An improved cavitation model described in the 1st report was applied to study the frequency response of a cavitating centrifugal pump to rotational speed. The responses of flow rate and total head rise across the pump were calculated by a liquid/vapor interface tracking method coupled with the unsteady Reynolds Averaged Navier-Stokes equation. Calculated responses of flow rate and total head rise were compared with the corresponding experimental ones, and showed reasonable agreement with measured data. Frequency response of the cavitating pump to rotational speed was discussed based on the calculated and measured characteristics.
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