Heat Load on Gas-Turbine Blades and Vanes

PhD student: Andreas Sveningsson
Supervisor: Lars Davidson
Co-supervisor: Håkan Nilsson
Cooperation: Volvo Aero Corp., Siemens
Sponsors: STEM, Volvo Aero, Siemens
Publications: [1-4]
Start of project: September 2000

In modern gas turbines with low NOx burners the inlet temperature profile into the turbine is uniform. The flat temperature profile combined with a high turbine inlet temperature are the reasons why specially the end-walls or platforms of the gas-turbine flow path are exposed to high heat loads. To be able to design next generation of gas turbines it will be necessary to improve the knowledge about the heat load on the end walls of the gas-turbine flow path.
The three-dimensional flow around a guide vane -- and later on in the project maybe a complete stage -- will be studied numerically. The fluid flow and heat transfer in the region of the end plates will be the focus of the investigation. The cooling air from the injection holes upstream of the guide vane is very important for the heat transfer, and it will be taken into account.
The following parameters could be investigated:
  • Influence of aerodynamic design including parameters as for example stage load, relative pitch etc.
  • Influence of boundary conditions on walls upstream the cascade like additional wall friction which affects the stagnation pressure distribution upstream of the stage as well as gas path steps.
The purpose of the work should be to increase the understanding of the influence of critical parameters on the platform heat transfer.

  1. A. Sveningsson
    "Analysis of the Performance of Different v²-f Turbulence Models in a Stator Vane Passage Flow", thesis of Lic. of Engng, Dept. of Thermo and Fluid Dynamics, Chalmers University of Technology, Göteborg, 2003.
    Download PDF file (41MB)
  2. A. Sveningsson and L. Davidson, "Assessment of Realizability Constraints and Boundary Conditions in V2F Turbulence Models", Turbulence Heat and Mass Transfer 4, pp. 585-592, K. Hanjalic, Y. Nagano and M.J. Tummers (eds.), begell house, inc., New York, Wallingford (UK), 2003.
    View PDF file
  3. A. Sveningsson and L. Davidson, "Assessment of Realizability Constraints and Boundary Conditions in V2F Turbulence Models", Int. J. Heat Fluid Flow, Vol. 25, no 5, pp. 785-794, 2004.
  4. A. Sveningsson and L. Davidson, "Computations of Flow Field and Heat Transfer in a Stator Vane Passage using the V2F Turbulence Model", Journal of TurbomachineryVol. 127, No. 3, pp. 627-634, 2005.
  5. A. Sveningsson, B.A. Pettersson-Reif, L. Davidson
    "Modelling the Entrance Region in a Plane Asymmetric Diffuser by Elliptic Relaxation", The Fourth International Symp. on Turbulence and Shear Flow Phenomena, Williamsburg, Virginia, 2005.
    View PDF file

This page, Heat Load on Gas-Turbine Blades and Vanes, should be part of a frames system at www.tfd.chalmers.se/~lada/projects/proind.html
Ingalena Ljungström