Novel scaling law for the tip vortex cavitation (TVC) noise is derived from the physical basis of TVC, employing the Rankine vortex model, the Rayleigh-Plesset equation, the lifting surface theory, and the number of bubbles generated per unit time (N0). All terms appearing in the scaling law have physical or mathematical grounds except for N0. Therefore, to experimentally validate the N0 term, experiments are designed to keep the same TVC patterns as velocities and dimensions vary. Optimal shooting conditions with a velocity and size variation are determined from the scaling exponents, cavitation numbers and Reynolds numbers at each condition. To avoid wall effects and flow field interaction, two hydrofoils are optimally arranged by using computational fluid dynamics (CFD) for size variation. Images taken by a high speed camera are used to count N0, considering similitude of the spectra of nuclei. Scaling exponents curve fitted from five velocities and cavitation inception numbers have an exponent value of 0.371, which is closely placed on scaling exponents curve deduced from Schlichting’s friction coefficients fitting with Reynolds number. The tendency that N0 is proportional to a velocity and inversely proportional to a size can be confirmed by this study.
Skip Nav Destination
ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels
August 3–7, 2014
Chicago, Illinois, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4626-1
PROCEEDINGS PAPER
Experimental Study of Scale Effects on the Scaling Law for Tip Vortex Cavitation Noise
Jisoo Park,
Jisoo Park
Seoul National University, Seoul, Korea
Search for other works by this author on:
Cheolsoo Park,
Cheolsoo Park
Korea Research Institute of Ships & Ocean Engineering, Daejeon, Korea
Search for other works by this author on:
Youngmin Choo,
Youngmin Choo
Seoul National University, Seoul, Korea
Search for other works by this author on:
Woojae Seong
Woojae Seong
Seoul National University, Seoul, Korea
Search for other works by this author on:
Jisoo Park
Seoul National University, Seoul, Korea
Cheolsoo Park
Korea Research Institute of Ships & Ocean Engineering, Daejeon, Korea
Youngmin Choo
Seoul National University, Seoul, Korea
Woojae Seong
Seoul National University, Seoul, Korea
Paper No:
FEDSM2014-21449, V002T06A006; 9 pages
Published Online:
December 22, 2014
Citation
Park, J, Park, C, Choo, Y, & Seong, W. "Experimental Study of Scale Effects on the Scaling Law for Tip Vortex Cavitation Noise." Proceedings of the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence. Chicago, Illinois, USA. August 3–7, 2014. V002T06A006. ASME. https://doi.org/10.1115/FEDSM2014-21449
Download citation file:
26
Views
Related Proceedings Papers
Related Articles
Experimental Study on the Effect of Number of Bubble Occurrences on Tip Vortex Cavitation Noise Scaling Law
J. Fluids Eng (June,2017)
Effect of Gap Size on Tip Leakage Cavitation Inception, Associated Noise and Flow Structure
J. Fluids Eng (December,2002)
Tip Vortex Formation and Cavitation
J. Fluids Eng (June,1997)
Related Chapters
Numerical Simulations of Tip Leakage Vortex Cavitation Flows Around a NACA0009 Hydrofoil
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Experimental Investigation of Ventilated Supercavitation Under Unsteady Conditions
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Study on the Hybrid Method of CFD and Bubble Dynamics for Marine Propeller Cavitation Noise Prediction
Proceedings of the 10th International Symposium on Cavitation (CAV2018)