Fig. 1. Schematic diagram of the KRISO large cavitation tunnel.
Fig. 2. Test set-up & model propeller.
Fig. 3. Test condition & ship operating profile.
Fig. 4. Propeller cavitation observation: (a) JA = 1.12, σA = 2.75 (b) JA = 1.12, σA = 1.50 (c) JA = 1.20, σA = 2.00 (d) JA = 1.20, σA = 1.50.
Fig. 5. Propeller cavitation inception and related noise: Synchronized measurement results of image and noise.
Fig. 6. Noise spectrum according to cavitation number: (a) JA = 1.12 (b) JA = 1.20.
Fig. 7. DEMON analysis for JA = 1.12.
Fig. 8. DEMON analysis for JA = 1.20.
Fig. 9 Propeller cavitation inception diagram: visual detection & acoustic detection.
Table 1. Type and name of propeller cavitation.
참고문헌
- D. P. Ross, Mechanics of Underwater Noise (Pergamon Press, New York, 1973), pp. 202-203.
- J. S. Carlton, Marine Propellers and Propulson (Butterworth-Heinemann Ltd, Oxford, 1994), pp. 227-236.
- W. K. Blake, Mechanics of Flow-Induced Sound and Vibration volume I (Academic Press, London, 1986), pp. 370-393.
- W. K. Blake, Mechanics of Flow-Induced Sound and Vibration volume II (Academic Press, London, 1986), pp. 460-469.
- S. Y. Kim, H. C. Lee, Y. J. Choi, and J. S. Oh, "Study on the analysis of cavitation inception speed using hull vibration" (in Korean), Trans. KSNVE. 27, 602-607 (2017). https://doi.org/10.5050/KSNVE.2017.27.5.602
- G. Kuiper, "New developments around sheet and tip vortex cavitation on ships", Proc. Fourth International Symp., on Cavitation, CAV2001:lecture.007 (2001).
- G. Bark and W. B. Berlekom, "Experimental investigations of cavitation dynamics and cavitation noise," Proc. 12th Symp., on Naval Hydrodynamics, 470-493 (1978).