Abstract
A vehicle-mounted three-dimensional underwater particle image velocimetry (PIV) device is used in a towing tank to measure the velocity distribution of the inlet duct of a waterjet ship model in a self-propulsion test. The following points are shown through a comparison of the influences of the stationary and free states of the ship model on the measured results: (1) during the test, the ship attitude will change, specifically, the ship model will heave and trim, (2) the degree of freedom disturbs the processing of the pixel images enough to distort the subsequent image processing, (3) the stationary state of the ship model is the optimal mode for measuring the velocity distribution using the PIV device, and (4) if the changes must be considered, the man-made heaving and trimming may be pre-applied, and be made a corrected stationary mode. In addition, the momentum effect coefficient and the energy effect coefficient are calculated in a non-uniform inflowing state, and the related factors affecting the two coefficients are analyzed. The test results show that the pumping action of the waterjet creates a transverse vector in the cross-sectional speed, which increases the non-uniformity of the inflow. These results could help to establish the design requirements for a waterjet-propelled ship type.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Van Terwisga T., Hoyt J. G., Zangeneh M. et al. Report of specialist committee on validation of waterjet test procedures [C]. Proceedings 23rd International Towing Tank Conference. Venice, Italy, 2002.
Takai T., Kandasamy M., Stern F. Verification and validation study of URANS simulations for an axial waterjet propelled large high-speed ship [J]. Journal of Marine Science and Technology, 2011, 16(4): 434–447.
Newman J. N. Marine hydrodynamics [M]. Boston, USA: MIT Press, 1977, 175–193.
Pope S. B. Turbulent flows [M]. Cambridge, UK: Cambridge University Press, 2010, 121–150.
Allison J. L. Marine waterjet propulsion [J]. SNAME Transactions, 1993, 101: 275–335.
Van Terwisga T. Waterjet-hull interaction [D]. Doctoral Thesis, Delft, The Netherlands: Delft Technical University, 1996.
Falchi M., Felli M., Grizzi S. et al. SPIV measurements around the DELFT 372 catamaran in steady drift [J]. Experiments in Fluids, 2014, 55(11):1–20.
Kim W. J., Van S. H., Kim D. H. Measurement of flows around modern commercial ship models [J]. Experiments in Fluids, 2001, 31: 567–578.
ITTC 2008. Propulsion committee, final report and recommendation to the 25th [C]. Proceedings of the 25th ITTC. Fukuoka, Japan, 2008.
Gao Z. L., Vassalos D. The dynamics of the floodwater and the damaged ship in waves [J]. Journal of Hydrodynamics, 2015, 27(5): 689–695.
Park W. G., Janga J. H., Chunb H. H. et al. Numerical flow and performance analysis of waterjet propulsion system [J]. Ocean Engineering, 2005, 32(14–15): 1740–1761.
Park W. G., Yun H. S., Chun H. H. et al. Numerical flow simulation of flush type intake duct of waterjet [J]. Ocean Engineering, 2005, 32(17–18): 2107–2120.
Kim M. C., Chun H. H. Experimental investigation into the performance of the axial-flow-type waterjet according to the variation of impeller tip clearance [J]. Ocean Engineering, 2007, 34(2): 275–283.
Chun H. H, Ahn B. H., Cha S. M. Experiment and analysis on the waterjet propulsion system of the tracked vehicle [C]. Proceedings of Spring Meeting of Society of Naval Architect of Korea. Seoul, Korea, 2001.
Kim M. C., Chun H. H., Kim H. Y. et al. Comparison of waterjet performance in tracked vehicles by impeller diameter [J]. Ocean Engineering, 2009, 36(17–18): 1438–1445.
Jessup S., Donnelly M., Fry D. et al. Performance analysis of a four waterjet propulsion system for large sealift ship [C]. 27th Symposium on Naval Hydrodynamics. Seoul, Korea, 2008.
Lu L., Pan G., Wei J. et al. Numerical simulation of tip clearance impact on a pumpjet propulsor [J]. International Journal of Naval Architecture and Ocean Engineering, 2016, 8(3): 219–227.
Wu H., Tan D., Miorini R. L. et al. Three-dimensional flow structures and associated turbulence in the tip region of a waterjet pump rotor blade [J]. Experiments in Fluids, 2011, 51(6): 1721–1737.
Wu H., Miorini R. L., Katz J. Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump [J]. Experiments in Fluids, 2011, 50(4): 989–1003.
Li G. Q. Design on auto-measure system for the compositive test station of the propulsive water-jet pump [D]. Master Thesis, Shanghai, China: Shanghai Jiao Tong University, 2007 (in Chinese).
Chang S. P., Wang Y. S., Ding J. M. Performance test and numerical calculation of a mixed-flow waterjet [J]. Journal of Harbin Engineering University, 2012, 33(5): 660–664 (in Chinese).
Yang Q., Wang Y., Zhang Z. Numerical prediction of the fluctuating noise source of waterjet in full scale [J]. Journal of Marine Science and Technology, 2014, 19(4): 510–527.
Theunissen R. Adaptive image interrogation for PIV [D]. Doctoral Thesis, Brussel, Belgium: Vrije Universiteit Brussel, 2009.
Scarano F., Riethmuller M. L. Iterative multigrid approach in PIV image processing with discrete window offset [J]. Experiments in Fluids, 1991, 26(6): 513–523.
Sun Y., Su Y., Wang X. et al. Experimental and numerical analyses of hydrodynamic performance of propeller boss cap fins in propeller-rudder system [J]. Engineering Applications of Computational Fluid Mechanics, 2016, 10(1): 145–159.
Author information
Authors and Affiliations
Corresponding author
Additional information
Project supported by the National Natural Science Foundation of China (Grant Nos. 51379043, 51209048 and 51409063).
Biography: Jie Gong (1991-), Male, Ph. D. Candidate
Rights and permissions
About this article
Cite this article
Gong, J., Guo, Cy., Wu, Tc. et al. Particle image velocimetry measurement of velocity distribution at inlet duct of waterjet self-propelled ship model. J Hydrodyn 29, 879–893 (2017). https://doi.org/10.1016/S1001-6058(16)60800-4
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1016/S1001-6058(16)60800-4