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CFD and Taguchi based optimization of air driven single stage partial admission axial turbine blade profiles

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  • Zengin, İbrahim
  • Erdoğan, Beytullah
  • Benim, Ali Cemal

Abstract

Single-stage axial flow turbines are typically used in underground mining machines and underwater vehicles due to their safety and small size. However, the high-pressure ratio and small mass flow rates force the flow inside the turbine to be supersonic. The blade design of such turbines with high-flow velocity leads to high losses and low turbine efficiencies at conventional design values. In this paper, the 1D design of the turbine is carried out using the meanline design method. The results of the design algorithm are compared with both experimental, CFD (Computational Fluid Dynamics), and a well-known commercial software AxSTREAM. After validating the design, Taguchi method is used to analyze 6 different parameters (Blade Shape, Nozzle Shape, Cord Length, Solidity Ratio, Nozzle Angle and Blade Thickness) affecting the turbine performance and the optimum blade profile is compared with the conventional blade design. The optimum design isentropic efficiency (68.267%) outperformed the conventional design turbine isentropic efficiency (61.759%) by about 11%. This paper provides a different insight into the conventional turbine design method.

Suggested Citation

  • Zengin, İbrahim & Erdoğan, Beytullah & Benim, Ali Cemal, 2024. "CFD and Taguchi based optimization of air driven single stage partial admission axial turbine blade profiles," Energy, Elsevier, vol. 290(C).
    • Handle: RePEc:eee:energy:v:290:y:2024:i:c:s036054422400104x
    DOI: 10.1016/j.energy.2024.130333
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    References listed on IDEAS

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    4. Peng, Ningjian & Wang, Enhua & Wang, Wenli, 2023. "Design and analysis of a 1.5 kW single-stage partial-admission impulse turbine for low-grade energy utilization," Energy, Elsevier, vol. 268(C).
    5. Hanwei Wang & Yue Chao & Tian Tang & Kai Luo & Kan Qin, 2021. "A Comparison of Partial Admission Axial and Radial Inflow Turbines for Underwater Vehicles," Energies, MDPI, vol. 14(5), pages 1-20, March.
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