Numerical Prediction of Sediment Erosion on Francis Turbine Blades

Abstract:

The paper presents the numerical prediction of sediment erosion on Francis turbine blades using CFD code. The 3-D turbulent particulate-liquid two-phase flow equations are employed in this study. The computing domain is discretized with a full three-dimensional mesh system of unstructured tetrahedral shapes. The finite volume method is used to solve the governing equations and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. Simulation results have shown that the sand erosion rate on pressure side is more than on the suction side of the blade. The numerical simulation results are consistent with the real situation.

• Periodical: Advanced Materials Research (Volume 662)
• Pages: 643-647
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.662.643
• Online since: February 2013
• Authors: Hong Ming Zhang, Li Xiang Zhang
• Keywords: Computational Fluid Dynamics (CFD), Francis Turbine Runner, OpenFOAM, Sediment Erosion

References

[1] THari Prasad Neopane. Sediment Erosion in Hydro Turbines, Phd thesis, Norwegian University of Science and Technology, (2010).

[2] Brekke. Design of hydraulic machinery working in sand laden water, In: Duan C.G. and Karelin V.Y. (eds), Abrasive erosion and corrosion of hydraulic machinery, 155‐181, Imperial college press, London.

DOI: 10.1142/9781848160026_0004

[3] Mamata Kumari Padhy, R.P. Saini, A review on silt erosion in hydro turbines, Renewable and Sustainable Energy Reviews 12 , 2008, 1974–(1987).

DOI: 10.1016/j.rser.2007.01.025

[4] Biraj Singh thapa, ristine Gjosater, Mette Eltvik, Ole Gunnar Dahlhaug, Bhola Thapa. Effects of Turbine Design Parameters on Sediment Erosion of Francis Runner, Developments in Renewable Energy Technology (ICDRET), 2nd International Conference, (2012).

DOI: 10.1088/1755-1315/15/3/032052

[5] Biraj Singh Thapa, Bhola Thapa, Mette Eltvik. Optimizing runner blade profile of Francis turbine to minimize sediment erosion, The 26'" IAHR Symposium on Hydraulic Machinery and Systems Beijing, China, (2012).

DOI: 10.1088/1755-1315/15/3/032052

[6] JIANJUN ZENG and DONALD R. LOWE. Numerical simulation of turbidity current flow and sedimentation: I. Theory . International Association of Sediinentologists, (1997).

[7] H K Zhang, X B Liu, Z Liang, D M Liu and H Y Wang. 3D numerical analysis of flow in Francis turbine in sandy river. Earth and Environmental Science 15 (2012).

DOI: 10.1088/1755-1315/15/3/032053

[8] Alexandre Perrig, Francois Avellan, Jean-Louis Kueny, Mohamed Farhat. Flow in a Pelton Turbine Bucket: Numerical and Experimental Investigations, 350-358.

DOI: 10.1115/1.2170120

[9] T.R. Bajracharya B. Acharya C.B. Joshi, R.P. Saini, O.G. Dahlhaug. Sand erosion of Pelton turbine nozzles and buckets: A case study of Chilime Hydropower Plant, Wear 264 (2008) 177–184.

DOI: 10.1016/j.wear.2007.02.021

[10] Tang Xue-Lin, TANG Hong-Fen, WU Yu-Lin. Simulating and erosion prediction of 3D two phase flow through a turbine runner, JOURNAL OF ENGINEERING THERMOPHYSICS, Vol. 22, N0. 1, jan., (2001).