Research Center for Engineering of
                Systems with Complex Fluids
Title: 3D Numerical Flow Analysis into a Francis Turbine Runner with Medium Specific Speed at Off-Design Operating Conditions
Published In: Acta Technica Napocensis, Series: Applied Mathematics and Mechanics nr. 52, Vol. II
Description: Hydropower is the largest source of renewable energy and it is the most efficient way to generate electricity. However, this huge potential is partially exploited (only 18% in the world and 44% in Romania). Additionally, more than 70% from actual hydropower plants from Romanian require to be refurbished. Therefore, the numerical investigations into an old Francis turbine runner with medium specific speed at off-design conditions are performed. The interblade vortices at off-design conditions were indentified using CFD. As a result, the flow is strongly disturbed inducing hydrodynamics and mechanical problems. Conclusively, the runner is sensitive at off-design conditions due to the geometry of the blade. A new runner with improved hydrodynamic performances can be designed using novel philosophies and new tools in conjunction with data available about operating conditions.
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Publication year: 2009
Keywords:Computational Fluid Dynamics (CFD), Francis turbine, interblade vortex, off-design conditions.
Download Paper: Paper
Authors: MUNTEAN Sebastian , BAYA Alexandru , SUSAN-RESIGA Romeo , ANTON Ioan ,
Type: National Journal Article
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Laboratory: Numerical Simulation and Parallel Computing Laboratory
Institution: UPT