The effect of angle of attack on the generated wave propagation

• Autorzy: Javanmardi M. , Binns J. , Izham M. I. C. , Rafieshahraki J.

Identyfikatory

DOI

10.17402/214

• Języki publikacji: EN

Abstrakty

EN

The presented work is an experimental investigation into the waves generated by a pressure source moving in a straight channel. Wave fields generated by the moving pressure source are described and the effects of angle of attack on the generated wave height, surfable wave quality, drag and vertical forces are presented. The main objective of this study was to investigate the relationship between the angle of attack and the generated wave height across the towing tank width and the surfable wave quality. The investigations were conducted at the Australian Maritime College towing tank on a wavedozer at four different attack angles at various speeds. Three wave probes were installed across the channel to record the generated wave heights. Based on the experimental results, it was concluded that smaller angles of attack produced higher quality surfable waves compared to larger angles of attack, while the height of the generated wave has a direct relationship with the angle of attack. By comparing the forces for different models, it was concluded that the pressure source with the lowest angle of attack has the minimum drag but maximum displacement.

Słowa kluczowe

EN

wave propagation; surfable wave; wave quality; angle of attack

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2017
• Tom: nr 50 (122)
• Strony: 36--41
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Javanmardi M.

• University of Tasmania, Australia

autor

Binns J.

• University of Tasmania, Australia

autor

Izham M. I. C.

• University of Tasmania, Australia

autor

Rafieshahraki J.

• University of Tasmania, Australia

Bibliografia

• 1. Driscoll, A. & Renilson, M.R. (1980) The wavedozer. A system of generating stationary waves in a circulating water channel. AMTE(H) TM80013.
• 2. Ertekin, R.C., Webster, W.C. & Wehausen, J.V. (1986) Waves caused by a moving disturbance in a shallow channel of finite width. Journal of Fluid Mechanics 169, pp. 275– 292.
• 3. Hartley, A. (2012) Quantifying wave face quality for surf craft riding.
• 4. Javanmardi, M. (2015) The Investigation of High Quality Surfing Waves Generated by a Moving Pressure Source. PhD Thesis, University of Tasmania, in Australian Maritime College. Tasmania.
• 5. Javanmardi, M., Binns, J., Renilson, M. & Thomas, G. (2017) Influence of channel shape on wave generated parameters by a pressure source in shallow water. Journal of Waterway, Port, Coastal, and Ocean Engineering 143(5).
• 6. Javanmardi, M., Binns, J., Renilson, M.R., Thomas, G., Schmied, S. & Huijsmans, R. (2012) The Formation of Surfable Waves in a Circular Wave Pool: Comparison of Numerical and Experimental Approaches. ASME Proc. 31st International Conference on Ocean, Offshore and Arctic Engineering, Volume 4: Offshore Geotechnics; Ronald W. Yeung Honoring Symposium on Offshore and Ship Hydrodynamics Rio de Janeiro, Brazil, 1–6 July.
• 7. Javanmardi, M., Binns, J., Thomas, G. & Renilson, M.R. (2013) Prediction of Water Wave Propagation Using Computational Fluid Dynamics. ASME Proc. 32nd International Conference on Ocean, Offshore and Arctic Engineering, Nantes, France, 9–14 June.
• 8. Jiang, T., Henn, R. & Sharma, S.D. (2002) Wash waves generated by ships moving on fairways of varying topography. Proc. the 24th Symposium on Naval Hydrodynamics, Fukuoka, Japan, 8–13 July, pp. 441–455.
• 9. Katsis, C. & Akylas, T.R. (1987) On the excitation of long nonlinear water waves by a moving pressure distribution. Part 2. Three-dimensional effects. Journal of Fluid Mechanics 177, pp. 49–65.
• 10. Koushan, K., Werenskiold, P. & Zhao, R. (2001) Experimental and Theoretical Investigation of Wake Wash. Proc. the 6th International Conference on FAST SEA TRANSPORTATION. The Royal Institution of Naval Architects: Southampton, UK. pp. 165–179.
• 11. Liu, P.L.-F. & Wu, T.-R. (2004) Waves generated by moving pressure disturbances in rectangular and trapezoidal channels. Journal of Hydraulic Research 42 (2), pp. 163– 171.
• 12. Macfarlane, G.J. & Cox, G. (2004) The development of vessel wave wake criteria for the Noosa and Brisbane Rivers in Southeast Queensland. Proc. 5th International Conference on Coastal Environment, Alicante, Spain.
• 13. Macfarlane, G.J. (2012) Marine vessel wave wake: focus on vessel operations within sheltered waterways. Doctor of Philosophy thesis, Australian Maritime College, University of Tasmania, Australia.
• 14. Macfarlane, G.J., Bose, N. & Duffy, J.T. (2012) Wave wake: focus on vessel operations within sheltered waterways. Proc. of the SNAME Annual Meeting, Providence, Rhode Island, 24–26th October.
• 15. Macfarlane, G.J., Cox, G. & Bradbury, J. (2008) Bank erosion from small craft wave wake in sheltered waterways. RINA Transactions, International Journal of Small Craft Technology. Part B.
• 16. Mathew, J. & Akylas, T.R. (1990) On three-dimensional long water waves in a channel with sloping sidewalls. Journal of Fluid Mechanics 215, pp. 289–307.
• 17. Nanson, G.C., Von Krusenstierna, A., Bryant, E.A. & Renilson, M.R. (1994) Experimental measurements of river bank erosion caused by boat-generated waves on the Gordon River, Tasmania. Regulated Rivers: Research and Management 9 (1), pp. 1–14.
• 18. Pedersen, G. (1988) Three-dimensional wave patterns generated by moving disturbances at transcritical speeds. Journal of Fluid Mechanics 196, pp. 39–63.
• 19. Peregrine, D.H. (1968) Long waves in a uniform channel of arbitrary cross-section. Journal of Fluid Mechanics 32(02), pp. 353–365.
• 20. Peters, A.S. (1966) Rotational and irrotational solitary waves in a channel with arbitrary cross-section. Communications on Pure and Applied Mathematics 19 (4), pp. 445–471.
• 21. Renilson, M.R. & Lenz, S. (1989) An investigation into the effect of hull form on the wake wave generated by low speed vessels. Proc. 22nd American Towing Tank Conference, pp. 424–429.
• 22. Robbins, A., Thomas, G.A., Renilson, M.R., Macfarlane, G.J. & Dand, I. (2011) Subcritical wave wake unsteadiness. RINA Transactions, International Journal of Maritime Engineering 153, Part A3.
• 23. Schmied, S., Binns, J.R., Renilson, M.R., Thomas, G.A., Macfarlane, G.J. & Huijsmans, R. (2011) A Novel Method for Generating Continuously Surfable Waves – Comparison of Predictions With Experimental Results. Proc. 30th International Conference on Ocean, Offshore and Arctic Engineering. Rotterdam, Netherlands and Journal of Offshore Mechanics and Arctic Engineering 2013, 135 (3).
• 24. Teng, M.H. & Wu, T.Y. (1997) Effects of channel cross-sectional geometry on long wave generation and propagation. Physics and Fluids 9 (11), pp. 3368–3377.
• 25. Webber, G. (2004) Wave Generation Apparatus. I.P. Australia, Editor.
• 26. Webber, W.I.P. (2006) Organization, Editor. Switzerland.
• 27. Zibell, H.G. & Grollius, W. (1999) Fast vessels on inland waterways. Proc. The RINA International Conference on Coastal Ships and Inland Waterways. London, England.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)