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A Comparison of Partial Admission Axial and Radial Inflow Turbines for Underwater Vehicles

Author

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  • Hanwei Wang

    (School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China)

  • Yue Chao

    (Xi’an Precision Machinery Research Institute, Xi’an 710077, Shaanxi, China)

  • Tian Tang

    (Xi’an Precision Machinery Research Institute, Xi’an 710077, Shaanxi, China)

  • Kai Luo

    (School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China)

  • Kan Qin

    (School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China)

Abstract

The metal fueled steam Rankine cycle has been successfully applied to Unmanned Underwater Vehicles. However, the suitable turbine configuration is yet to be determined for this particular application. In this paper, the mean-line design approach based on the existing empirical correlations is first described. The corresponding partial admission axial and radial inflow turbines are then preliminarily designed. To assess the performance of designed turbines, the three-dimensional Computational Fluid Dynamics (CFD) simulations and steady-state structural analysis are performed. The results show that axial turbines are more compact than radial inflow turbines at the same output power. In addition, since radial inflow turbines can reduce the exit energy loss, this benefit substantially offsets the increment of the rotor losses created by the low speed ratios and supersonic rotor inlet velocity. On the contrary, due to the large volume of dead gas and strong transient effects caused by the high rotor blade length of radial inflow turbines, the overall performance between axial and radial inflow turbines is comparable (within 4%). However, the strength of radial inflow turbines is slightly superior because of lower blade inlet height and outlet hub radius. This paper confirms that the axial turbine is the optimal configuration for underwater vehicles in terms of size, aerodynamics and structural performance.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:5:p:1514-:d:513841
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    References listed on IDEAS

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    1. Huang, Guangdai & Shu, Gequn & Tian, Hua & Shi, Lingfeng & Zhuge, Weilin & Zhang, Jing & Atik, Mohammad Atikur Rahman, 2020. "Development and experimental study of a supercritical CO2 axial turbine applied for engine waste heat recovery," Applied Energy, Elsevier, vol. 257(C).
    2. Xue, Yingxian & Yang, Mingyang & Martinez-Botas, Ricardo F. & Romagnoli, Alessandro & Deng, Kangyao, 2019. "Loss analysis of a mix-flow turbine with nozzled twin-entry volute at different admissions," Energy, Elsevier, vol. 166(C), pages 775-788.
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    Cited by:

    1. Qin, Kan & Wang, Hanwei & Qi, Jianhui & Sun, Junliang & Luo, Kai, 2022. "Aerodynamic design and experimental validation of high pressure ratio partial admission axial impulse turbines for unmanned underwater vehicles," Energy, Elsevier, vol. 239(PD).
    2. Wang, Hanwei & Luo, Kai & Huang, Chuang & Zou, Aihong & Li, Daijin & Qin, Kan, 2022. "Numerical investigation of partial admission losses in radial inflow turbines," Energy, Elsevier, vol. 239(PA).
    3. 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).
    4. Dariusz Kozak & Paweł Mazuro, 2023. "Numerical Analysis of Two-Stage Turbine System for Multicylinder Engine under Pulse Flow Conditions with High Pressure-Ratio Turbine Rotor," Energies, MDPI, vol. 16(2), pages 1-46, January.

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