Inducer cavitation characteristic prediction method for different fluids, temperatures and rotating speeds

The invention discloses an inducer cavitation characteristic prediction method for different fluids, temperatures and rotating speeds, and belongs to the technical field of impeller machinery. The implementation method comprises the following steps of correcting on the basis of the traditional cavitation number definition; obtaining the corrected cavitation similar parameters; and selecting a lift coefficient to reduce by a preset value m%, and establishing a relation of cavitation numbers of different working conditions under the condition of the same flow coefficient of the same inducer according to the condition that the cavitation similar parameters are not changed so as to predict the cavitation characteristic under an unknown working condition through a cavitation characteristic curve under a known working condition. According to the method, the unknown cavitation characteristic curve under other working conditions is predicted according to the existing cavitation characteristic curves of the inducer un