Propeller Cavitation in Non-Uniform Flow and Correlation with the Near Pressure Field †
Abstract
:1. Introduction
2. Experimental Setup
2.1. Facility and Propeller
2.2. Wake Generator
2.3. Flow Conditions
3. High-Speed Visualizations and Pattern Measurement
4. Pressure Measurements
4.1. Instrumentation
4.2. Harmonic Analysis of Pressure Data
5. Results and Discussion
5.1. Cavitation Pattern
5.2. Pressure Field
6. Correlations between Cavitation and Pressure Field
6.1. Time Correlations
6.2. Pressure from Vapor Volume
7. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
Appendix A. Nomenclature
Symbol | Description | Units |
R | Propeller radius | |
D | Propeller diameter, | |
Upstream axial inflow velocity | ||
n | Propeller rotation frequency | |
Pressure at propeller axis | ||
Vapor pressure | ||
Water density | ||
Cavitation number referred to , | - | |
Angular position | ||
Blade area for | ||
Cavity extension | ||
Cavity characteristic length, | ||
Cavity volume | ||
J | Advance coefficient, | - |
T | Thrust | |
Thrust coefficient, | - | |
, | Amplitude and phase of the Fourier series | , |
Fundamental frequency | ||
BPF | Blade passage frequency |
Appendix B. Cavitation Extension Measurement
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Alves Pereira, F.; Di Felice, F.; Salvatore, F. Propeller Cavitation in Non-Uniform Flow and Correlation with the Near Pressure Field. J. Mar. Sci. Eng. 2016, 4, 70. https://doi.org/10.3390/jmse4040070
Alves Pereira F, Di Felice F, Salvatore F. Propeller Cavitation in Non-Uniform Flow and Correlation with the Near Pressure Field. Journal of Marine Science and Engineering. 2016; 4(4):70. https://doi.org/10.3390/jmse4040070
Chicago/Turabian StyleAlves Pereira, Francisco, Fabio Di Felice, and Francesco Salvatore. 2016. "Propeller Cavitation in Non-Uniform Flow and Correlation with the Near Pressure Field" Journal of Marine Science and Engineering 4, no. 4: 70. https://doi.org/10.3390/jmse4040070
APA StyleAlves Pereira, F., Di Felice, F., & Salvatore, F. (2016). Propeller Cavitation in Non-Uniform Flow and Correlation with the Near Pressure Field. Journal of Marine Science and Engineering, 4(4), 70. https://doi.org/10.3390/jmse4040070