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2010 | 17 | 1 |
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Comparing N3-60 cascade exit angels obtained from tunnel measurements and numerical simulations

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The article compares the results of the measurements performed in the aerodynamic tunnel owned by the Czestochowa University of Technology and the numerical simulation done using the code FLUENT for a plane cascade of N3-60 profiles. The comparison study aims at assessing differences between the exit angles measured experimentally and those obtained from numerical calculations. Variable parameters in the measurements and the calculations were the relative pitch and the profile stagger angle. The measurements were performed in the flow of air. The same medium and having the same inlet parameters was assumed in the calculations. The calculations were performed in two dimensions for the compressible flow. The k-ε RNG turbulence model was used to complete the equation system. Comparing the measured and calculated results provides opportunities for assessing the range of differences between the experiment and the simulation. The obtained results and formulated conclusions will find the application not only in the power industry, but also in the shipbuilding industry for analysing the operation of steam and gas turbines used as main and auxiliary propulsion systems on both merchant vessels and battle ships
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Opis fizyczny
  • Faculty of Mechanical Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk, Poland
  • Faculty of Mechanical Engineering and Management, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
  • 1. Thermal and flow characteristics of operation of turbine profiles and stages produced in ZAMECH. Report of the Czestochowa University of Technology (in Polish), 1988.
  • 2. FLUENT 6.3 User’s Guide, Chapter 11: Modeling Flows Using Sliding and Deforming Meshes.
  • 3. R. Puzyrewski: Analysis of model turbine investigations of cylindrical stages. VIII Conf. on Turbines of Large Output 1984
  • 4. R. Puzyrewski, P. Krzyślak: Parametric analysis of the efficiency function of radial impulse stages (in Polish) – IF-FM Report no. 334/94 – Gdańsk – 1994
  • 5. Dobes, Fort, Halama, Kozel: Numerical simulation of a flow for turbomachinery applications – Con. INTERNAL FLOW – 2001
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