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One-dimensional pulse-flow modeling of a twin-scroll turbine

Author

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  • Chiong, M.S.
  • Rajoo, S.
  • Romagnoli, A.
  • Costall, A.W.
  • Martinez-Botas, R.F.

Abstract

This paper presents a revised one-dimensional (1D) pulse flow modeling of twin-scroll turbocharger turbine under pulse flow operating conditions. The proposed methodology in this paper provides further consideration for the turbine partial admission performance during model characterization. This gives rise to significant improvement on the model pulse flow prediction quality compared to the previous model. The results show that a twin-scroll turbine is not operating at full admission throughout the in-phase pulse flow conditions. Instead, they are operating at unequal admission state due to disparity in the magnitude of turbine inlet flow. On the other hand, during out-of-phase pulse flow, a twin-scroll turbine is working at partial admission state for majority of the pulse cycle. An amended mathematical correlation in calculating the twin-scroll turbine partial admission characteristics is also presented in the paper. The impact of its accuracy on the pulse flow model prediction is explored.

Suggested Citation

  • Chiong, M.S. & Rajoo, S. & Romagnoli, A. & Costall, A.W. & Martinez-Botas, R.F., 2016. "One-dimensional pulse-flow modeling of a twin-scroll turbine," Energy, Elsevier, vol. 115(P1), pages 1291-1304.
    • Handle: RePEc:eee:energy:v:115:y:2016:i:p1:p:1291-1304
    DOI: 10.1016/j.energy.2016.09.041
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    References listed on IDEAS

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    1. Rajoo, Srithar & Romagnoli, Alessandro & Martinez-Botas, Ricardo F., 2012. "Unsteady performance analysis of a twin-entry variable geometry turbocharger turbine," Energy, Elsevier, vol. 38(1), pages 176-189.
    2. Serrano, José Ramón & Olmeda, Pablo & Tiseira, Andrés & García-Cuevas, Luis Miguel & Lefebvre, Alain, 2013. "Theoretical and experimental study of mechanical losses in automotive turbochargers," Energy, Elsevier, vol. 55(C), pages 888-898.
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    Cited by:

    1. 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.
    2. Zhu, Dengting & Zheng, Xinqian, 2019. "Potential for energy and emissions of asymmetric twin-scroll turbocharged diesel engines combining inverse Brayton cycle system," Energy, Elsevier, vol. 179(C), pages 581-592.
    3. Wei, Jiangshan & Xue, Yingxian & Yang, Mingyang & Deng, Kangyao & Wang, Cuicui & Wu, Xintao, 2021. "A reduced-order model of twin-entry nozzleless radial turbine based on flow characteristics," Energy, Elsevier, vol. 214(C).
    4. Zhu, Dengting & Zheng, Xinqian, 2018. "A new asymmetric twin-scroll turbine with two wastegates for energy improvements in diesel engines," Applied Energy, Elsevier, vol. 223(C), pages 263-272.
    5. Zhu, Dengting & Zheng, Xinqian, 2019. "Fuel consumption and emission characteristics in asymmetric twin-scroll turbocharged diesel engine with two exhaust gas recirculation circuits," Applied Energy, Elsevier, vol. 238(C), pages 985-995.
    6. Zhu, Dengting & Zheng, Xinqian, 2017. "Asymmetric twin-scroll turbocharging in diesel engines for energy and emission improvement," Energy, Elsevier, vol. 141(C), pages 702-714.
    7. Khalil, Khalil M. & Mahmoud, S. & Al- Dadah, R.K., 2020. "Experimental and numerical investigation of blade height effects on micro-scale axial turbines performance using compressed air open cycle," Energy, Elsevier, vol. 211(C).
    8. Xue, Yingxian & Yang, Mingyang & Pan, Lei & Deng, Kangyao & Wu, Xintao & Wang, Cuicui, 2021. "Gasdynamic behaviours of a radial turbine with pulsating incoming flow," Energy, Elsevier, vol. 218(C).
    9. Ding, Zhanming & Zhuge, Weilin & Zhang, Yangjun & Chen, Hua & Martinez-Botas, Ricardo & Yang, Mingyang, 2017. "A one-dimensional unsteady performance model for turbocharger turbines," Energy, Elsevier, vol. 132(C), pages 341-355.
    10. 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.
    11. Wei, Jiangshan & Xue, Yingxian & Deng, Kangyao & Yang, Mingyang & Liu, Ying, 2020. "A direct comparison of unsteady influence of turbine with twin-entry and single-entry scroll on performance of internal combustion engine," Energy, Elsevier, vol. 212(C).

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