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Analysis of Results of Energy Losses Numerical and Experimental Prediction in Axial Turbine Transonic Cascades

  • STEAM-TURBINE, GAS-TURBINE, AND COMBINED-CYCLE PLANTS AND THEIR AUXILIARY EQUIPMENT
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Abstract

The paper is devoted to the matter of energy losses prediction in axial turbine cascade based on CFD analysis. An intensive development of numerical modelling of flows in turbomachinery and the advent of various turbulence models open up major opportunities for blade row gas-dynamic efficiency estimation. Nowadays statistically significant data on the difference between predicted and experimental losses for flow conditions with Mach number near 1 and above are not available in public domain. Therefore the present paper offers analysis results for several turbine blade cascades of various geometries, that have detailed experimental data. Reynold’s stress model in CFD analysis was used. The study has showed that the estimated and experimental data show satisfactory fit for isentropic Mach number along blade profile and significant difference in losses of energy when there is a skew shock waves system. The predicted losses are lower than experimental ones for the most flow conditions.

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Authors and Affiliations

  1. JSC Ural Works of Civil Aviation, 620025, Yekaterinburg, Russia

    M. Yu. Levental

  2. JSC Compressor Complex, 129029, St. Petersburg, Russia

    Yu. R. Mironov

  3. St. Petersburg State Marine Technical University, 190121, St. Petersburg, Russia

    B. A. Tikhomirov

Authors
  1. M. Yu. Levental
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  2. Yu. R. Mironov
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  3. B. A. Tikhomirov
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Correspondence to M. Yu. Levental.

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Levental, M.Y., Mironov, Y.R. & Tikhomirov, B.A. Analysis of Results of Energy Losses Numerical and Experimental Prediction in Axial Turbine Transonic Cascades. Therm. Eng. 67, 699–705 (2020). https://doi.org/10.1134/S0040601520100067

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  • DOI: https://doi.org/10.1134/S0040601520100067

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