INVESTIGATION INTO THE PROPELLER CAVITATION IN OBLIQUE FLOW.
Rept. no. 2.
MITSUBISHI HEAVY INDUSTRIES LTD NAGASAKI (JAPAN)
Pagination or Media Count:
In the previous study on the propeller cavitation in oblique flow, it was noticed that the thrust and the torque measured in tunnel decreased with shaft inclination, contrary to the results of a theoretical calculation. In the present study, therefore, the cause of the discrepancy between the theory and the experiments was investigated first, and it was found that the decrease of the measured thrust and torque in oblique flow was due to the rotational wake of the rotating propeller shaft upstream of the propeller. Then, cavitation tests in oblique flow condition were carried out on the series of supercavitating propellers to see the effects of pitch ratio and expanded area ratio on the cavitation characteristics in oblique flow condition, as planned originally. The results were presented with the correction for the rotational wake. Author
- Marine Engineering
- Fluid Mechanics