摘要：Model propellers used in cavitation tunnel test are smaller than actual ship propellers. Therefore cavitation occurred on model propellers tends to be unstable. As a countermeasure, a method of applying roughness on the leading edge of the model propeller blade to turbulent its surface is used. However, this method may be affected CFD analysis because the cross section of the propeller blades is different from the design. Furthermore, the influence on the measurement results due to the difference in the design and model of the wing cross section. In this study, stable cavitation generation have been made possible by generating hydrogen bubbles from the wire-mesh screen that upstream side of the propeller and flowing them into the propeller as the nuclei for cavitation. The authors have conducted a cavitation tunnel test of a model propeller using this device in a large cavitation tunnel of NMRI, and confirmed the stability of cavitation with this device and its usefulness.
