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Volute outlet conditions study by measurements on the stator blades of a small radial turbine stage

Binder, Nicolas and Carbonneau, Xavier and Chassaing, Patrick Volute outlet conditions study by measurements on the stator blades of a small radial turbine stage. (2004) In: 3rd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 21-24 Juin 2004, Cape town, South Africa .

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Abstract

The purpose of this paper is to identify the outlet conditions of the volute of a variable geometry turbine stage. The angle and the magnitude of the velocity leaving the scroll to the stator have to be as regular as possible around the annulus to ensure best efficiencies. The specificities of a variable geometry nozzle is likely to disturb the homogenization of the conditions. Moreover an interaction between the volute and the opening of the stator may be possible. An experiment has been set up on a small turbine stage. As instrumentation is difficult by conventional probes, it was decided to measure the aerodynamic moment on the stator blades to point the distortion of the incoming flow. It was shown that the inlet conditions of the stator are quite disturbed either by the spacers or by the volute itself. The shape of the distortion is quite stable, regardless of the pressure ratio of the stage or the opening configuration of the stator.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
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Deposited By: Xavier CARBONNEAU

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