Top

Published in:

2017 | OriginalPaper | Chapter

27. Hydraulic Characteristics of the Francis Turbine with Various Groove Shapes of Draft Tube

Authors : Hyeon-Seok Seo, Jae-Won Kim, Youn-Jea Kim

Published in: Energy Solutions to Combat Global Warming

Publisher: Springer International Publishing

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

The small hydropower is a renewable energy technology, because the energy resource ‘falling water’ is replenishable as the fuel (falling water) is part of the hydrological cycle. This technology is being a form of renewable energy with no gaseous emissions, the small hydropower systems are among the options for climate change mitigation and therefore, they are candidates for international carbon trading opportunities such as the Clean Development Mechanism. The draft tube is an important component of a Francis turbine which is one of the small hydropower systems, influences the hydraulic performance. Moreover, as the swirl flow in the draft tube of the Francis turbine decreases pressure at the inlet region, the suppression of swirl flow can be a useful method of minimizing the occurrence of cavitation. In this study, the flow characteristics in a Francis turbine on the 15 MW hydropower generations have been investigated numerically with various shapes of draft tube. Numerical analysis was conducted by using the commercial code, ANSYS CFX. Results showed that the grooved model has relatively uniform distribution of pressure field compared with basic model. Hence, the stability of flow is enhanced, which may attribute to the suppression of draft surge and cavitation.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

previous chapter Analysis of the Thermal Effect About Groundwater Flowing to the Nest of Tubes Heat Transfer

next chapter Progress in Sorption Thermal Energy Storage

Edy EJ (2009) Final study report, achievable renewable energy targets for Puerto Rico’s renewable energy portfolio standard. Puerto Rico’s Energy Affairs Administration, Puerto Rico. (Chapter 8)

Paish O (2002) Small hydro power: technology and current status. Renew Sustain Energy Rev 6:537–556CrossRef

Wallace AR, Whittington HW (2008) Performance prediction of standardized impulse turbines for micro-hydro. Elsevier B.V., UK (Sutton, Int Water Power Dam Constr)

Ghosh TK, Prelas MA (2011) Energy resources and systems. In: Renewable resources, vol 2. Springer, Dordrecht

Miller G, Corren D, Armstrong P, Franceschi J (1987) A study of an axial-flow turbine for kinetic hydro power generation. Energy 12(2):155–162. Great Britain Pergamon Journals Ltd

Agarwal T (2012) Review of pump as turbine (PAT) for micro-hydropower. Int J Emerg Technol Adv Eng 2(11):163

Ramos H, Borga A (1999) Pumps as turbines: an unconventional solution to energy production. Urban Water 1:261–263CrossRef

Date A, Date A, Akbarzadeh A (2013) Investigating the potential for using a simple water reaction turbine for power production from low head hydro resources. Energy Conv Manag 66:257–270CrossRef

Okot DK (2013) Review of small hydropower technology. Renew Sustain Energy Rev 26:515–520CrossRef

10.

Voith-Siemens (2013) Francis turbines, hydropower generation, Voith. http://voith.com/en/Voith_Francis_turbines.pdf. Accessed 15 Aug 13

11.

Kc A, Thapa B, Lee Y (2014) Transient numerical analysis of rotor-stator interaction in a Francis turbine. Renew Energy 65:227–235CrossRef

12.

Benigni H, Jaberg H (2007) Stationary and transient numerical simulation of a bulb turbine. In: 5th IASME/WSEAS international conference on fluid machineries and aerodynamics, pp 135–140

13.

Qian ZD, Zheng B, Huai WX, Lee YH (2009) Analysis of pressure oscillations in a Francis hydraulic turbine with misaligned guide vanes. Proc Inst Mech Eng Part A J Power Energy 224:139–152

14.

Ruprecht A, Heitele M, Helmrich T (2000) Numerical simulation of a complete francis turbine including unsteady rotor/stator interactions. Inst Fluid Mech Hydraul Mach

15.

Ying H, Heming C, Ji H, Xirong L (2011) Numerical simulation of unsteady turbulent flow through a Francis turbine. J Nat Sci 16(2):179–184

16.

Li J, Yu J, Wu Y (2010) 3D unsteady turbulent simulations for transients of the Francis turbine. In: 25th IAHR symposium of hydraulic machinery and systems. IOP conference series: earth and environmental science, p 12

17.

Ruprecht A, Helmrich T, Aschenbrenner T, Scherer T (2002) Simulation of vortex rope in a turbine draft tube. In: Proceedings of the hydraulic machinery and systems 21st IAHR symposium

18.

Jost D, Lipej A (2011) Numerical prediction of non-cavitating and cavitating vortex rope in Francis turbine draft tube. J Mech Eng 57(6):445–456CrossRef

19.

United States Department of the Interior, Bureau of Reclamation (1976) Selecting hydraulic reaction turbines. Engineering monograph, No 20

20.

Sayers AT (1990) Hydraulic and compressible flow turbo machine. McGraw-Hill, New York

21.

Cioacan GD, Iliescu MS, Vu TC, Nennemann B, Avellan F (2007) Experimental study and numerical simulation of the FLINDT draft tube rotating vortex. ASME J Fluids Eng 129:146–158CrossRef

22.

Wei Q, Zhu B, Choi YD (2012) Internal flow characteristics in the draft tube of a Francis turbine. J KSME 36:618–626

23.

Kurokawa J, Imamura H, Choi YD (2010) Effect of groove on the suppression of swirl flow in a conical diffuser. ASME J Fluids Eng 132:071101-1–071101-8CrossRef

24.

Qian ZD, Yang JD, Huai WX (2007) Numerical simulation and analysis of pressure pulsation in Francis hydraulic turbine with air admission. J Hydrodyn 19:467–472CrossRef

25.

Nishi M, Wang XM, Yoshida K, Takahashi T, Tsukamoto T (1996) An experimental study on fins, their role in control of the draft tube surging. In: Proceedings of the 17th IAHR symposium, pp 905–914

26.

Kirschner O, Schmidt H, Ruprecht A, Mader R, Meuburger P (2010) IOP conference on earth and environmental science, p 012092

27.

Susan-Resiga R, Thi CV, Sebastian M, Ciocan GD, Nennemann B (2006) Jet control of the draft tube vortex rope in Francis turbines at partial discharge. In: Proceedings of the 23rd IAHR symposium, vol 1, p 14

28.

Susan-Resiga R, Sebastian MPS, Francois A (2008) Axisymmetric Swirling flow simulation of the draft tube vortex in Francis turbines at partial discharge. In: Proceedings of the 24th symposium on hydraulic machinery and systems, IAHR, pp 27–31

29.

ANSYS Corporation CFX ver. 14.5 Manual (2014)

30.

Menter FR (2012) Two-equation eddy-viscosity turbulence models for engineering applications. J AIAA 32:1598–1605CrossRef

31.

Orieux S, Rossi C, Esteve D (2002) Thrust stand for ground tests of solid propellant microthrusters. Rev Sci Instrum 73:2694–2699CrossRef

Title: Hydraulic Characteristics of the Francis Turbine with Various Groove Shapes of Draft Tube
Authors: Hyeon-Seok Seo
Jae-Won Kim
Youn-Jea Kim
Publisher: Springer International Publishing
Book: Energy Solutions to Combat Global Warming
Print ISBN: 978-3-319-26948-1

Electronic ISBN: 978-3-319-26950-4

Copyright Year: 2017
DOI: https://doi.org/10.1007/978-3-319-26950-4_27