Numerical Simulation of 3-D Unsteady Flows in Flow Passage on Spiral Case of Hydro-Turbine

Abstract:

Based on the Reynolds averaged Navier-Stokes equations, numerical simulation of unsteady flows in the flow passage in spiral case of a hydro-turbine was conducted. The computational domain of the flow passage includes spiral case, stay vanes and guide vanes. The RNG turbulence model in curvilinear body-fitted coordinate systems with finite volume algorithm is adopted. Numerical calculations are conducted under the boundary condition with operating regime for current guide vane openings. And pressure distribution and velocity distribution within the flow path are obtained. The results are helpful to improve the comprehensive hydraulic performances and to enhance the operating stability of a machinery set.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 2466-2469
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.2466
• Online since: December 2012
• Authors: Ze Li, Zhi Lin Liang
• Keywords: Computational Fluid Dynamics (CFD), Flow Passage, Hydro-Turbine, Spiral Case

References

[1] Schilling R etal. Rapid prototyping of hydraulic machinery. In: Proc of 18th IAHR Symposium. Belgrade. (Kluwer Academic Publishers, 1996).

[2] Huang Jian-feng, Zhang Li-xiang, He Shi-hua: Proceedings of the CSEE, Vol. 29-2, (2009), pp.87-93, in Chinese.

[3] Huang Jianfeng, Zhang Lixiang, Yao Ji, CAO Liang: Proceedings of the CSEE, Vol. 31-32, (2011), pp.115-121, in Chinese.

[4] H.K. Versteeg, W. Malalasekera, An Introduction to Computational Fluid Dynamics: The Finite Volume Method. (Wiley. NewYork 1995).

[5] Yakhot V，Orzag S A: Journal of Scientific Computing, Vol. 1, (1986), pp.3-11.