Casing Treatment for Suppression of Cavitation Surge (2nd report: Observation of Inducer Internal Flow with PIV)

摘要

Casing treatment with an aim for the suppression of cavitation surge was experimented. For the investigation of internal flow, the observations were conducted with PIV. It was found that (a) the strength of the backflow becomes weaker than that without casing treatment, (b) unsteadiness of the backflow of inducer is remarkable.