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Numerical Investigation of the Secondary Swirling in Supersonic Flows of Various Nature Gases

Author

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  • Vyacheslav Volov

    (Natural Science Department, Samara State Transport University, 443066 Samara, Russia)

  • Nikolay Elisov

    (Independent Researcher, 443086 Samara, Russia)

  • Anton Lyaskin

    (Department of Expertise, “ERA” Military Innovative Technopolis, 353456 Anapa, Russia)

Abstract

Despite the application of vortex tubes for cooling, separating gas mixtures, vacuuming, etc., the mechanism of energy separation in vortex tubes remains an object of discussion. This paper studies the effect of secondary swirling in supersonic flows on the energy separation of monatomic and diatomic gases. The approach used is a numerical solution of the Reynolds-averaged Navier-Stokes equations, closed by the Reynolds Stress Model turbulence model. The modelling provided is for a self-vacuuming vortex tube with air, helium, argon, and carbon dioxide. According to the results of the calculations, the effect of secondary swirling is inherent only in viscous gases. A comparison was made between obtained total temperature difference, the level of secondary swirling and power losses on expansion from the nozzle, compression shocks, friction, turbulence, and energy costs to develop cascaded swirl structures. Our results indicate that helium and argon have the highest swirling degree and, consequently, the highest energy separation. Moreover, it can be concluded that the power costs on the development of cascaded vortex structures have a significant role in the efficiency of energy separation.

Suggested Citation

  • Vyacheslav Volov & Nikolay Elisov & Anton Lyaskin, 2021. "Numerical Investigation of the Secondary Swirling in Supersonic Flows of Various Nature Gases," Energies, MDPI, vol. 14(23), pages 1-25, December.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:8122-:d:694684
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    References listed on IDEAS

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    1. Zhang, Bo & Guo, Xiangji, 2018. "Prospective applications of Ranque–Hilsch vortex tubes to sustainable energy utilization and energy efficiency improvement with energy and mass separation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 89(C), pages 135-150.
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    Cited by:

    1. Simone Ferrari & Riccardo Rossi & Annalisa Di Bernardino, 2022. "A Review of Laboratory and Numerical Techniques to Simulate Turbulent Flows," Energies, MDPI, vol. 15(20), pages 1-56, October.

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