International Journal of Naval Architecture and Ocean Engineering

  • 제5권1호
  • /
  • Pages.81-100
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  • 2013
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  • 2092-6782(pISSN)
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  • 2092-6790(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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An experimental investigation into cavitation behaviour and pressure characteristics of alternative blade sections for propellers

  • Korkut, Emin (Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University) ;
  • Atlar, Mehmet (School of Marine Science and Technology, Newcastle University) ;
  • Wang, Dazheng (School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology)
  • 발행 : 2013.03.31
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초록

During the final quarter of the last century considerable efforts have been spent to reduce the hull pressure fluctuations caused by unsteady propeller cavitation. This has resulted in further changes in propeller design characteristics including increased skew, tip unloading and introduction of "New Blade Sections" (NBS) designed on the basis of the so-called Eppler code. An experimental study was carried out to investigate flow characteristics of alternative two-dimensional (2-D) blade sections of rectangular planform, one of which was the New Blade Section (NBS) developed in Newcastle University and other was based on the well-known National Advisory Committee for Aeronautics (NACA) section. The experiments comprised the cavitation observations and the measurements of the local velocity distribution around the blade sections by using a 2-D Laser Doppler Anemometry (LDA) system. Analysis of the cavitation tests demonstrated that the two blade sections presented very similar bucket shapes with virtually no width at the bottom but relatively favourable buckets arms at the suction and pressure sides for the NACA section. Similarly, pressure analysis of the sections displayed a slightly larger value for the NBS pressure peak. The comparative overall pressure distributions around the sections suggested that the NBS might be more susceptible to cavitation than the NACA section. This can be closely related to the fundamental shape of the NBS with very fine leading edge. Therefore a further investigation into the modification of the leading edge should be considered to improve the cavitation behaviour of the NBS.

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참고문헌

  1. ASME, 1998. Test uncertainty: instruments and apparatus. ASME PTC 19.1, New Jersey, USA 31 December 1998.
  2. Atlar, M., 2000. A history of the Emerson cavitation tunnel and its role in propeller cavitation research. Proceedings of International Conference on Propeller Cavitation NCT'50. Newcastle upon Tyne 3-5 April 2000, UK: Penshaw Press, pp.3-34.
  3. Atlar, M. and Korkut, E., 1997. Emerson cavitation tunnel inflow characteristics based on 2-D laser Doppler anemometry analysis. Department of Marine Technology, University of Newcastle upon Tyne. Report No: MT-1997-001.
  4. Atlar, M., Korkut, E., Wang, D. and Paterson, I., 1997. An investigation into cavitation inception characteristics of 2D alternative blade sections by using Laser Doppler Anemometry. Department of Marine Technology, University of Newcastle upon Tyne. Report No: MT-1997-007.
  5. Crompton, M.J. and Barrett, R.V., 2000. Investigation for the separation bubble formed behind sharp leading edge of a flat plate at incidence. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 214(March1), pp.157-176.
  6. Dang, J., 2004. Improving cavitation performance with new blade sections for marine propellers. International Shipbuilding Progress, 51(4), pp.353-376.
  7. Dang, J., Tang, H., Cheng, J.D., Peng, X.X., Qin, Q. and Pan, S.S., 1998. New blade section design and its application. Proceedings of 3rd International Symposium on Cavitation, Cavitation'98. Grenoble, France April 1998, pp.301-308.
  8. Eppler, R. and Somers, D.M., 1980. Computer program for the design and analysis of low speed airfoils. NASA Technical Memorandum, n.80210, 142 pages.
  9. Eppler, R. and Shen, Y.T., 1979. Wings sections for hydrofoils-part 1: symmetrical profiles. Journal of Ship Research, 23(3), pp.209-217.
  10. ITTC, 1990. Propulsor committee report. Proceedings of 19th International Towing Tank Conference. Madrid, Spain 16-22 September 1990.
  11. ITTC, 1999. Propulsor committee report. Proceedings of 22nd International Towing Tank Conference. Seoul, Korea & Shangai, China 5-11 September 1999.
  12. Jessup, S.D., Berberich, W. and Remmers, K.D., 1994. Cavitation performance analysis of naval surface ship propellers with standard and new blade sections. Proceedings of the 20th Symposium on Naval Hydrodynamics. Santa Barbara, California, USA 21-26 August 1994.
  13. Kawakita, C. and Hoshino, T., 1998. Design system of marine propellers with new blade sections. Proceedings of the 22nd Symposium on Naval Hydrodynamics. Washington D.C., USA 9-14 August 1994, pp.110-126.
  14. Lee, J.-T., kim, M.C., Ahn, J.W. and Kim, H.C., 1993. Development of KD-propeller series using a new blade section. Transactions of the Society of Naval Architects of Korea, 28(2), pp.52-68.
  15. Li, J.-H., Tang, D.-H. and Dong, S.-T., 2010. Propeller design by prescribed pressure distribution. Journal of Ship Mechanics, 14(1-2), pp.10-19.
  16. Schlichting, H. and Gersten, K., 2000. Boundary-layer theory. 8th ed. Springer.
  17. Wang, D., 1995. The development and validation of propeller design methods incorporating new approaches to blade section design. PhD. University of Newcastle upon Tyne.
  18. Wang, D., Atlar, M. and Korkut, E., 1995. A propeller design method based on cavitation free buckets of blade sections. Proceedings of International Conference on Problems of Marine Propulsion, HYDRONAV'95. Gdansk, Poland 22-24 November 1995, pp.217-226.
  19. Yamaguchi, H., Kato, H., Kamijo, A. and Maeda, M., 1988a. Development of marine propellers with better cavitation performance (2nd Report: Effect of design lift coefficient for propellers with flat pressure distribution). Journal of Society of Naval Architects of Japan, 163(6), pp.48-65.
  20. Yamaguchi, H., Kato, H., Sugatani, A., Kamijo, A., Honda, T. and Maeda, M., 1988b. Development of marine propellers with better cavitation performance (3rd Report: Pressure distribution to stabilize cavitation). Journal of Society of Naval Architects of Japan, 164, pp.489-491.
  21. Zhou, W.-X., Wu, Y.-H. and Dong, S.-T., 2001. A propeller design method with new blade section for improving cavitation inception under unsteady condition. Journal of Ship Mechanics, 5, pp.18-26.