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Effects of inlet parameters on the supersonic condensation and swirling characteristics of binary natural gas mixture

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  • Bian, Jiang
  • Cao, Xuewen
  • Teng, Lin
  • Sun, Yuan
  • Gao, Song

Abstract

This paper aims at clarifying the characteristics of spontaneous condensation of natural gas under the swirl condition and obtaining the influence mechanism of the inlet parameters on the condensation and swirling characteristics. A swirl nozzle with a central body was designed, and the condensation characteristics of a methane-ethane binary mixture under supersonic swirling conditions were numerically studied by using the gas-liquid governing equations, internally consistent classical nucleation theory, Gyarmathy's droplet growth model, and Reynolds stress turbulence model. The results show that with the decrease of the inlet temperature and the increase of the inlet pressure, the condensation position moves toward the nozzle inlet, the maximum nucleation rate, droplet radius and outlet humidity of methane-ethane binary mixture increase. When the temperature rises from 250 K to 270 K, the speed increases about 2 m/s, which indicates that the increase of the inlet temperature can increase the tangential velocity in the nozzle and promote the separation of the droplets from the dry natural gas. At the same time, it is found that with the increase of the inlet pressure, the tangential velocity remains unchanged.

Suggested Citation

  • Bian, Jiang & Cao, Xuewen & Teng, Lin & Sun, Yuan & Gao, Song, 2019. "Effects of inlet parameters on the supersonic condensation and swirling characteristics of binary natural gas mixture," Energy, Elsevier, vol. 188(C).
    • Handle: RePEc:eee:energy:v:188:y:2019:i:c:s0360544219317773
    DOI: 10.1016/j.energy.2019.116082
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    References listed on IDEAS

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    1. Bian, Jiang & Cao, Xuewen & Yang, Wen & Song, Xiaodan & Xiang, Chengcheng & Gao, Song, 2019. "Condensation characteristics of natural gas in the supersonic liquefaction process," Energy, Elsevier, vol. 168(C), pages 99-110.
    2. Yang, Yan & Zhu, Xiaowei & Yan, Yuying & Ding, Hongbing & Wen, Chuang, 2019. "Performance of supersonic steam ejectors considering the nonequilibrium condensation phenomenon for efficient energy utilisation," Applied Energy, Elsevier, vol. 242(C), pages 157-167.
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    Cited by:

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    2. Liu, Yang & Cao, Xuewen & Guo, Dan & Cao, Hengguang & Bian, Jiang, 2023. "Influence of shock wave/boundary layer interaction on condensation flow and energy recovery in supersonic nozzle," Energy, Elsevier, vol. 263(PA).

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