Rehabilitation of Francis Turbines of Power Plants with Computational Methods

  • Kutay Celebioglu TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY http://orcid.org/0000-0001-8845-4928
  • Selin Aradag TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY http://orcid.org/0000-0002-2034-0008
  • Ece Ayli TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY http://orcid.org/0000-0002-6209-161X
  • Burak Altintas TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY

Abstract

Rehabilitation of existing hydroelectric power plants (HEPP) by redesigning the hydraulic turbines is usually more elaborate than designing a tailor-made turbine for a new plant. Some of the parts are buried and the space is limited with the size of the old turbine; therefore, this increases the number of constraints imposed on the design. This article presents a Computational Fluid Dynamics (CFD) based rehabilitation procedure involving the state of the art redesign of the turbine of a hydroelectric power plant for better performance at design and off-design conditions of several head and flow rates. Runner and guide vanes of the Francis turbine are designed per the design head and flow rates available for the turbine at the site. The simulations for the designed parts are performed both separately and using all turbine parts as full turbine analyses. Both the design and off-design conditions are simulated for the newly designed and existing turbines for comparison purposes. Cavitation performance of the new design is also determined. The proposed methodology is applicable to any Francis type turbine and any HEPP that needs rehabilitation.

Keywords:

Francis turbine, Rehabilitation, Efficiency, Runner, Guide vane

DOI: 10.17350/HJSE19030000076

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Research Article

Author Biographies

Kutay Celebioglu, TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY

Dr. Celebioglu obtained his BS and MS degrees from the Department of Civil Engineering of Middle East Technical University in 2000 and 2002, respectively. He graduated from Drexel University, USA with a PhD degree in 2006. He worked as a postdoctoral fellow for William an Mary College ,n Virginia. He is currently the coordinator of TOBB University Hydro Energy Reseeach Center.

Selin Aradag, TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY

Dr. Selin Aradag obtained her BS and MS degrees from the Department of Mechanical Engineering of Middle East Technical University in 2000 and 2002, respectively. She graduated from Rutgers, The State University of New Jersey, USA in 2006 with a Ph.D degree. After spending two years as a Research Engineer at US Air Force Academy, Colorado Springs, USA, she joined the faculty of TOBB University of Economics and Technology, Department of Mechanical Engineering in 2008. She is the recipient of Turkish Academy of Sciences Distinguished Young Scientist Award in 2010. She is a senior member of American Institute of Aeronautics and Astronautics (AIAA) and served at the Fluid Dynamics Technical Committee of AIAA from 2006 to 2010. She is currently the director of TOBB ETU Hydro Energy Research Lab (ETU Hydro).

Ece Ayli, TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY

Dr. Ece Ayli graduated from TOBB University of Economics and Technology with a PhD in 2016. She holds BS and MS degrees from the same department in 2010 and 2012.

Burak Altintas, TOBB University of Economics and Technology, Hydro Energy Research Laboratory, Ankara, TURKEY

Burak Altintas is a graduate student at TOBB University of Economics and Technology Department of Mechanical Engineering. He is a graduate of Hacettepe University.

Published
2018-03-28
Section
ENGINEERING