Search results for: POLYTROPHIC.

• Rotor Blade Geometry Optimisation in Kaplan Turbine

  Publication

  • M. Banaszek
  • K. Tesch

  - TASK Quarterly - Year 2010

  The paper presents the description of method and results of rotor blade shape optimisation. The rotor blading constitutes a part ofturbine flow path. Optimisation consists in selection of the shape that minimises ratio of polytrophic loss. Shape of the blade isdefined by the mean camber line and thickness of the airfoil. Thickness is distributed around the camber line based on the ratio ofdistribution. Global optimisation was done...

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• The efficiency of turbomachinery in the zero-and three-dimensional approaches

  Publication

  • P. Ziółkowski
  • T. Kowalczyk
  • J. Badur
  • M. Feidt

  - Entropie - Year 2021

  Efficiency of turbomachinery is usually defined using an isentropic process. This approach provides a reliable reference point only when pressure and temperature measurements are available, e.g. at the casing inlet and outlet. In the case of a single stage internal efficiency determination the reference point is difficult. Computational fluid dynamics allows for an exact calculation of values of losses occurring in a turbine...

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