Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Sensitivity analysis of supersonic turbine trailing edges
Year:2018
Research Areas
  • Hidrodynamics stability,
  • Turbomachinery,
  • Aerodynamics
Information
Abstract
The use of compact architectures on aircraft turbine engines challenges the design and management of structural and thermal load requirements. Even operating in subsonic conditions, supersonic regimes may develop at the high pressure turbine passages, experiencing complex compression and expansion wave systems that interact with adjacent stages of the turbine. When cooling flow is ejected through the blade trailing edge slots, non-symmetrical configurations can appear due to the interaction of the injected flow with the surrounding flow field, leading to undesired loads and efficiency loses. In this work, a combination of RANS simulations, global stability and sensitivity analysis is employed to identify and explain the physical mechanisms of this phenomenon. A global mode associated with the geometrical expansion of the trailing edge slot is identified, and linked to the non-symmetrical configurations. To conclude, the regions where the flow would be more sensitive to flow modifications to excite or damp this phenomena are identified throughout an adjoint approximation.
International
Si
Congress
ECCM-ECFD 2018
960
Place
Glasgow, UK
Reviewers
No
ISBN/ISSN
978-84-947311-6-7
Start Date
11/05/2018
End Date
15/05/2018
From page
502
To page
518
Proceedings of the 7th. European Conference on Computational Fluid Dynamics ECFD 7
Participants
  • Autor: Alejandro Martinez-Cava Aguilar (UPM)
  • Autor: Eusebio Valero Sanchez (UPM)
  • Autor: Javier de Vicente Buendia (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Centro de Investigación en Simulación Computacional
  • Departamento: Matemática Aplicada a la Ingeniería Aeroespacial
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