Dimensioning and performance analysis of an axial hydraulic turbine of high power/weight ratio

• Autorzy: Kenyery F. , Rey R. , Noguera R.
• Języki publikacji: EN

Abstrakty

EN

The purpose of this research is to develop a methodology for dimensioning and performance analysis of a stage of Hydraulic Axial-Flow Turbines of High Power to Weight Ratio (HAFT-HPWR). The HAFT-HPWR consists of two rows (stator and rotor) with non-twisted blades. The axial flow turbine of higher power to weight ratio is that with adegree of reaction equal to zero. The experimental results on a single stage 50\% reaction turbine show a big influence of Reynolds number on the turbine performance. The zone of operation at the best efficiency point varies strongly with the rotation speed. The performance analysis of HAFT-HPWR requires the precise assessment of the influence of the Reynolds number on deflection and the hydraulic losses. Due to complexity of the flow in an axial turbine, such assessment should be based on 3D numerical simulation, in order to compute the hydraulic losses present in a stage of HAFT-HPWR, without using models and correlations.

Słowa kluczowe

EN

hydraulics; axial flow turbine performance; cavitation

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2002
• Tom: Vol. 6, No 4
• Strony: 609--620
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Kenyery F.

• Universidad Simon Bolivar, Departamento de Conversion y Transporte de Energia, Apartado Postal No 89.000, Caracas 1080-A, Venezuela

autor

Rey R.

• Ecole Nationale Superieure D'Arts et Metiers, 151, boulevard de l'Hopital, Paris 75013, France

autor

Noguera R.

• Ecole Nationale Superieure D'Arts et Metiers, 151, boulevard de l'Hopital, Paris 75013, France

Bibliografia

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• [7] Luu T S and Coulmy G 1990 Principe et applications de la methode de singularites a repartition discretisee en hydro et aerodynamique, Laboratoire d’Informatique pour la Mecanique et les Sciences de 1’Ingenieur, France, No. 90-11
• [8] CFX-4.2, AEA Technology pic. CFX International 8.19 Harwell, Didcot, Osfordshire 0X11 ORA, United Kingdom, December 1997
• [9] Sharma O P and Butler T L 1986 Int. Gas Turbine and Aeroengine Congress and Exposition, ASME 86-GT-228, Dusseldorf, West Germany