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A numerical model for the prediction of the fluid dynamic and mechanical losses of a Wankel-type expansion device

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  • Francesconi, Marco
  • Antonelli, Marco

Abstract

This paper presents a numerical model of the fluid dynamic processes and mechanical losses of a Wankel-type expansion device for microgeneration purposes. The prototype was built at the University of Pisa using the rotating parts of a gasoline-fueled Wankel engine. Considering the geometrical features of the prototype, the model simulates the fluid-dynamic losses across the valves, the thermal exchange with the outer ambient and the mechanical losses of the whole mechanism. The numerical results were then validated by the comparison with the pressure cycle obtained at the dynamic test bench using compressed air.

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  • Francesconi, Marco & Antonelli, Marco, 2017. "A numerical model for the prediction of the fluid dynamic and mechanical losses of a Wankel-type expansion device," Applied Energy, Elsevier, vol. 205(C), pages 225-235.
    • Handle: RePEc:eee:appene:v:205:y:2017:i:c:p:225-235
    DOI: 10.1016/j.apenergy.2017.07.125
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    Cited by:

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    2. Chen, Wei & Pan, Jianfeng & Liu, Yangxian & Fan, Baowei & Liu, Hongjun & Otchere, Peter, 2019. "Numerical investigation of direct injection stratified charge combustion in a natural gas-diesel rotary engine," Applied Energy, Elsevier, vol. 233, pages 453-467.
    3. Zhenghao Yang & Yang Du & Qi Geng & Xu Gao & Haonan Er & Yuanfei Liu & Guangyu He, 2022. "Performance Analysis of a Hydrogen-Doped High-Efficiency Hybrid Cycle Rotary Engine in High-Altitude Environments Based on a Single-Zone Model," Energies, MDPI, vol. 15(21), pages 1-20, October.
    4. Zou, Run & Li, Yuan & Liu, Jinxiang & Wang, Nana & Zeng, Qinghan & Li, Jiong, 2023. "Numerical study on the effects of spark strategies on knocking combustion in a downsized gasoline rotary engine," Energy, Elsevier, vol. 263(PD).
    5. Francesconi, Marco & Dori, Edoardo & Antonelli, Marco, 2019. "Analysis of Balje diagrams for a Wankel expander prototype," Applied Energy, Elsevier, vol. 238(C), pages 775-785.

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    Wankel; ORC cycles; Matlab;
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