Aerodynamical and aeroelastic investigations of a riblet design appllied on the surface of turbine exit guide vanes of a low pressure turbine

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Abstract

The present work gives a closer insight into the aerodynamic parameters obtained for turbine exit guide vanes (TEGV) of a low pressure turbine (LPT) with riblets applied on their suction side. Experimental data was obtained by using an aerodynamic five-hole-probe including a thermocouple as well as a trailing edge probe. Additionally, a comparison between the flow fields of the experimental data and the numerical results, obtained by performing a steady state Reynolds-Averaged Navier-Stokes (RANS) simulation, was done. The investigated flow fields are located up- and downstream of the TEGV’s and show a good overall agreement. Additionally, aeroelastic investigations show an influence of the changed surface structure onto the vibrations of the upstream located rotor blades. For a visual examination of the flow field, oil flow visualizations are performed and compared with results obtained by CFD simulations.

Original languageEnglish
Publication statusPublished - 1 Jan 2019
Event13th European Conference on Turbomachinery, Fluid dynamics, and Thermodynamics - Lausanne, Switzerland
Duration: 8 Apr 201912 Apr 2019

Conference

Conference13th European Conference on Turbomachinery, Fluid dynamics, and Thermodynamics
Abbreviated titleETC13
CountrySwitzerland
CityLausanne
Period8/04/1912/04/19

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Keywords

  • Aerodynamics
  • Aeroelastics
  • CFD
  • Low pressure turbine
  • Riblets
  • Turbine exit guide vanes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

Zenz, M., Hafizovic, A., Simonassi, L., Leitl, P., Benauer, R., Heitmeir, F., & Marn, A. (2019). Aerodynamical and aeroelastic investigations of a riblet design appllied on the surface of turbine exit guide vanes of a low pressure turbine. Paper presented at 13th European Conference on Turbomachinery, Fluid dynamics, and Thermodynamics, Lausanne, Switzerland.