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Erschienen in: WASSERWIRTSCHAFT 13/2015

01.05.2015 | Hydropower

Spatio-Temporal Description of the Swirling Flow in Hydraulic Turbine Draft Tube

verfasst von: Ao. Univ.-Prof. Dr.-Ing. Pavel Rudolf, Dipl.-Ing. David Štefan, Dr.-Ing. Roman Klas

Erschienen in: WASSERWIRTSCHAFT | Ausgabe 13/2015

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Excerpt

Highly swirling flow leaves runner of the hydraulic turbine, which is operated off the best efficiency point. Instability of the swirling flow results in so called vortex rope. Rotating vortex rope is a source of pressure pulsations, causes structural loads, vibrations and noise. Proper orthogonal decomposition (POD) provides a spatio-temporal description of the draft tube swirling flow and proves that only a very limited number of the flow eigenmodes is necessary to describe the flow dynamics. Construction of the reduced order model (ROM), which is derived by projection of Navier-Stokes equation onto POD basis forms a suitable state equation for the draft tube flow control. This paper presents a review of POD application to draft tube flows and a proposal of extension to ROM and closed loop flow control. …

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Literatur
[1]
Zurück zum Zitat Gupta, A. K.; Lilley, D. G.; Syred, N.: Swirl flows. Abacus Press, 1984. Gupta, A. K.; Lilley, D. G.; Syred, N.: Swirl flows. Abacus Press, 1984.
[2]
Zurück zum Zitat Dörfler, P.; Sick, M.; Coutu, A.: Flow-Induced Pulsation and Vibration in Hydroelectric Machinery. Heidelberg: Springer, 2013.CrossRef Dörfler, P.; Sick, M.; Coutu, A.: Flow-Induced Pulsation and Vibration in Hydroelectric Machinery. Heidelberg: Springer, 2013.CrossRef
[3]
Zurück zum Zitat Ciocan, G. D.; Iliescu, M. S.; Vu, T. C.; Nenneman, B.; Avellan, F.: Experimental study and numerical simulation of the FLINDT draft tube rotating vortex. In: Journal of Fluids Eng., 129 (2007), p. 146–158.CrossRef Ciocan, G. D.; Iliescu, M. S.; Vu, T. C.; Nenneman, B.; Avellan, F.: Experimental study and numerical simulation of the FLINDT draft tube rotating vortex. In: Journal of Fluids Eng., 129 (2007), p. 146–158.CrossRef
[4]
Zurück zum Zitat Rudolf, P.: Connection between inlet velocity field and diffuser flow instability. In: Applied and Computational Mechanics 3 (2009), No. 1, p.177–184. Rudolf, P.: Connection between inlet velocity field and diffuser flow instability. In: Applied and Computational Mechanics 3 (2009), No. 1, p.177–184.
[5]
Zurück zum Zitat Jacob, T.: Evaluation on a scale model and prediction of the stability of operation of Francis turbines. PhD thesis, EPFL Lausanne (1993), No 1 146. Jacob, T.: Evaluation on a scale model and prediction of the stability of operation of Francis turbines. PhD thesis, EPFL Lausanne (1993), No 1 146.
[6]
Zurück zum Zitat Berkooz, G.; Holmes, P.; Lumley, J. L.: The proper orthogonal decomposition in analysis of turbulent flows. In: Annual Review of Fluid Mechanics 23 (1993), p. 539–579.CrossRef Berkooz, G.; Holmes, P.; Lumley, J. L.: The proper orthogonal decomposition in analysis of turbulent flows. In: Annual Review of Fluid Mechanics 23 (1993), p. 539–579.CrossRef
[7]
Zurück zum Zitat Rudolf, P.; Štefan, D.: Decomposition of the swirling flow field downstream of Francis turbine runner. In: IOP Conference Series: Earth and Environmental Science, 2012, Volume 15, Part 6.CrossRef Rudolf, P.; Štefan, D.: Decomposition of the swirling flow field downstream of Francis turbine runner. In: IOP Conference Series: Earth and Environmental Science, 2012, Volume 15, Part 6.CrossRef
[8]
Zurück zum Zitat Cordier, L.; Bergmann, M.: Two typical applications of POD: coherent structures eduction and reduced order modelling. In: Lecture series 2002-4 on post-processing of experimental and numerical data. Von Karman Institute for Fluid Dynamics, Sint-Genesius-Rode, Belgium, 2002. Cordier, L.; Bergmann, M.: Two typical applications of POD: coherent structures eduction and reduced order modelling. In: Lecture series 2002-4 on post-processing of experimental and numerical data. Von Karman Institute for Fluid Dynamics, Sint-Genesius-Rode, Belgium, 2002.
[9]
Zurück zum Zitat Bergmann, M.; Cordier, L.: Control of circular cylinder wake by trust-region methods and POD reduced-order models. In: Report No. 6 552, INRIA, 2008. Bergmann, M.; Cordier, L.: Control of circular cylinder wake by trust-region methods and POD reduced-order models. In: Report No. 6 552, INRIA, 2008.
[10]
Zurück zum Zitat Noack, B. R.; Tadmor, G.; Morzynski, M.: Low-dimensional models for feedback flow control. Part I: Empirical Galerkin models. In: Proceedings of 2nd AIAA Flow Control Conference, 2004. Noack, B. R.; Tadmor, G.; Morzynski, M.: Low-dimensional models for feedback flow control. Part I: Empirical Galerkin models. In: Proceedings of 2nd AIAA Flow Control Conference, 2004.
[11]
Zurück zum Zitat Parezanovic, V.; et al.: Mixing layer manipulation experiments, Flow, turbulence and combustion 94 (2014), Issue 1, pp 155–173. Parezanovic, V.; et al.: Mixing layer manipulation experiments, Flow, turbulence and combustion 94 (2014), Issue 1, pp 155–173.
[12]
Zurück zum Zitat Colonius, T.; et al.: Closed-loop control of leading-edge and tip vortices for small UAV. In: Proceedings of the First Berlin Conference on Active Flow Control, 2006. Colonius, T.; et al.: Closed-loop control of leading-edge and tip vortices for small UAV. In: Proceedings of the First Berlin Conference on Active Flow Control, 2006.
[13]
Zurück zum Zitat Colonius, T.; Williams, D. R.: Control of vortex shedding on two- and three-dimensional airfoils. In: Philosophical transactions of Royal Society A 369 (2011), p. 1525–1539.CrossRef Colonius, T.; Williams, D. R.: Control of vortex shedding on two- and three-dimensional airfoils. In: Philosophical transactions of Royal Society A 369 (2011), p. 1525–1539.CrossRef
[14]
Zurück zum Zitat Susan-Resiga, R.; Vu, T. C.; Muntean, S.; Ciocan, G. D.; Nennemann, B.: Jet Control of the Draft Tube in Francis Turbines at Partial Discharge. In: Proc. 23rd IAHR Symposium on Hydraulic Machinery and Systems, Yokohama, Japan, 2006, Paper F192, p. 1-14. Susan-Resiga, R.; Vu, T. C.; Muntean, S.; Ciocan, G. D.; Nennemann, B.: Jet Control of the Draft Tube in Francis Turbines at Partial Discharge. In: Proc. 23rd IAHR Symposium on Hydraulic Machinery and Systems, Yokohama, Japan, 2006, Paper F192, p. 1-14.
[15]
Zurück zum Zitat Kjeldsen, M.; Olsen, K.; Nielsen, T.; Dahlhaug, O.: Water Injection for the Mitigation of draft Tube Pressure Pulsations In: Proc. 1st IAHR International Meeting of Working Group on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems. Barcelona, Spain, 2006, p. 1–11. Kjeldsen, M.; Olsen, K.; Nielsen, T.; Dahlhaug, O.: Water Injection for the Mitigation of draft Tube Pressure Pulsations In: Proc. 1st IAHR International Meeting of Working Group on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems. Barcelona, Spain, 2006, p. 1–11.
Metadaten
Titel
Spatio-Temporal Description of the Swirling Flow in Hydraulic Turbine Draft Tube
verfasst von
Ao. Univ.-Prof. Dr.-Ing. Pavel Rudolf
Dipl.-Ing. David Štefan
Dr.-Ing. Roman Klas
Publikationsdatum
01.05.2015
Verlag
Springer Fachmedien Wiesbaden
Erschienen in
WASSERWIRTSCHAFT / Ausgabe 13/2015
Print ISSN: 0043-0978
Elektronische ISSN: 2192-8762
DOI
https://doi.org/10.1007/s35147-015-0511-5

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