International Journal of Fluid Machinery and Systems

한국유체기계학회 (Korean Society for Fluid machinery)
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Comparative study of sediment erosion on alternative designs of Francis runner blade

  • Rajkarnikar, Bidhan (Department of Mechanical Engineering, Kathmandu University) ;
  • Neopane, Hari P. (Department of Mechanical Engineering, Kathmandu University) ;
  • Thapa, Biraj S. (Department of Mechanical Engineering, Kathmandu University)
  • 투고 : 2014.08.07
  • 심사 : 2015.08.25
  • 발행 : 2015.09.30
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초록

The aim of this study was comparative analysis of sediment-induced erosion on optimized design and traditional design of Francis runner blade. The analysis was conducted through laboratory experiments in a test rig called Rotating Disc Apparatus. The results showed that the extent of erosion was significantly less in the optimized design when compared based on the material loss. It was observed that the optimized design could reduce sediment erosion by about 14.4% if it was used in place of the reference design for entire duration of the experiment. Based on the observations and results obtained, it has been concluded that the optimization of hydraulic design of blade profile of Francis runner can significantly reduce the effect of sediment-induced erosion.

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참고문헌

  1. Thapa, B., Shrestha, R., Dhakal, P., Thapa, B.S. (2004). Sediment in Nepalese hydropower projects.
  2. Neopane, H. (2010). Sediment Erosion in Hydro Turbines. PhD Thesis at NTNU, Trondheim, Norway.
  3. Thapa, B. (2004). Sand Erosion in Hydraulic Machinery. PhD thesis at NTNU, Trondheim, Norway.
  4. Truscott, G.F. (1972). A Literature Survey on Abrasive Wear in Hydraulic Machinery. Wear. Volume 20, Issue 1, 29-50. https://doi.org/10.1016/0043-1648(72)90285-2
  5. Karelin, V.Y., Denisov, A.I., Yulin, Wu. (2002). Calculation of Hydraulic Abrasion. In: Duan CG and Karelin VY (eds.), Abrasive Erosion and Corrosion of Hydraulic Machinery. 53-94. Imperial College Press, London.
  6. Bajracharya, T.R., Acharya, B., Joshi, C.B., Saini, R.P., Dahlhaug, O.G. (2008). Sand erosion of Pelton turbine nozzles and buckets: a case study of Chilime hydropower plant. Wear. Volume 264, Issues 3-4, 177-184. https://doi.org/10.1016/j.wear.2007.02.021
  7. Kurosawa, S., Nakamura, K., Wei, P. (2011). Sand Erosion Prediction for Hydraulic Turbine Runner. Proc. The 11th Asian International Conference on Fluid Machinery, IIT Madras, Chennai, India.
  8. Padhy, M.K., Saini, R.P. (2009). Effect of Size and Concentration of Silt Particles on Erosion of Pelton Turbine Buckets. Energy 34, 1477-1483. https://doi.org/10.1016/j.energy.2009.06.015
  9. Bajracharya, T.R., Sapkota, D., Thapa, R., Poudel, S., Joshi, C.B., Saini, R.P., Dahlhaug, O.G. (2006). Correlation Study on Sand Led Erosion of Buckets and Efficiency Losses in High Head Power Plants. Proc. First National Conference on Renewable Energy Technology for Rural Development, Kathmandu, Nepal.
  10. Thapa, B.S., Thapa, B., Dahlhaug, O.G. (2012). Empirical modelling of sediment erosion in Francis turbines. Energy 41, 386-391. https://doi.org/10.1016/j.energy.2012.02.066
  11. Wood, R.J.K. (1999). The sand erosion performance of coatings. Materials and Design 20, 179-191. https://doi.org/10.1016/S0261-3069(99)00024-2
  12. Goyal, D.K., Singh, H., Kumar, H., Sahni, V. (2012). Slurry erosion behavior of HVOF sprayed WC-10Co-4Cr and Al2O3+13TiO2 coatings on a turbine steel. Wear 289, 46-57. https://doi.org/10.1016/j.wear.2012.04.016
  13. Thapa, B., Upadhyay, P., Dahlhaug, O.G., Basnet, R., Timsina, M. (2005). HVOF coatings for erosion resistance of hydraulic turbines: Experience of Kaligandaki "A" Hydropower Plant. Water Resources and Renewable Energy Development in Asia.
  14. Padhy, M.K., Saini, R.P. (2008). A review on silt erosion in hydro turbines. Renewable and Sustainable Energy Reviews. 12, 1974-1987. https://doi.org/10.1016/j.rser.2007.01.025
  15. Poudel, L., Thapa, B., Shrestha, B.P., Shrestha, N.K. (2012). Sediment Impact on Turbine Material: Case Study of Modi River, Nepal. Kathmandu University Journal of Science, Engineering and Technology. Vol. 8, No. I, 88-96.
  16. Matsumura, M., Chen, B.E. (2002). Erosion-Resistant Materials. In: Duan CG and Karelin VY (eds.), Abrasive Erosion and Corrosion of Hydraulic Machinery, 235-313, Imperial College Press, London.
  17. Chauhan, A.K., Goel, D.B., Prakash, S. (2008). Erosion behaviour of hydro turbine steels. Bull. Mater. Sci. Vol. 31, No. 2, 115-120, Indian Academy of Sciences. https://doi.org/10.1007/s12034-008-0020-6
  18. Erichsen, H.P. (2011). Mechanical design of Francis Turbine Exposed to Sediment Erosion. Master's Thesis at NTNU, Norway.
  19. Paulsen, J.B. (2011). FSI-analysis of a Francis turbine. Master's Thesis at NTNU, Norway.
  20. Thapa, B.S. (2011). Hydraulic Design of Francis Turbine to Minimize Sediment Erosion. Master's thesis at Kathmandu University, Nepal.
  21. Gjosaeter, K. (2011). Hydraulic design of Francis Turbine Exposed to Sediment Erosion. Master's Thesis at NTNU, Norway.
  22. Thapa, B.S., Eltvik, M., Gjosaeter, K., Dahlhaug, O.G., Thapa, B. (2012). Design Optimization of Francis Runners for Sediment Handling. Proc. of Fourth Int. Conf. on Water Resources and Renewable Energy Development in Asia, Thailand.
  23. Thapa, B.S., Panthee, A., Thapa, B. (2012). Computational Methods in Research of Hydraulic Turbines Operating In Challenging Environments. International Journal of Advanced Renewable Energy Research. Vol. 1, Issue 2, 95-98.
  24. Eltvik, M., Thapa, B.S., Dahlhaug, O.G., Gjosaeter, K. (2012). Numerical analysis of effect of design parameters and sediment erosion on a Francis runner. Int. J. Hydropower & Dams, Chiang Mai, Thailand.
  25. Thapa, B.S., Thapa, B., Dahlhaug, O.G. (2012). Current research in hydraulic turbines for handling sediments. Energy 47. Issue 1, 62-69. https://doi.org/10.1016/j.energy.2012.05.014
  26. Rajkarnikar, B. (2013). Study of Sediment Erosion in Francis Turbine Runner at Laboratory Conditions. Master's Thesis at Kathmandu University. Lambert Academic Publishing, Germany. (ISBN: 978-3-659-38165-2)
  27. Brekke, H. (2002). Hydraulic Turbines Design, Erection and Operation. NTNU Publication.
  28. Shrestha, K.P., Thapa, B., Dahlhaug, O.G., Neopane, H.P., Thapa, B.S. (2012). Innovative Design of Francis Turbine for Sediment Laden Water. Proc. of TIM International Conference, Kathmandu, Nepal.
  29. Brekke, H. (2002). Design of Hydraulic Machinery Working in Sand Laden Water. In: Duan CG and Karelin VY (eds.), Abrasive Erosion and Corrosion of Hydraulic Machinery. 155-181. Imperial College press, London.