IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v239y2022ipes0360544221026761.html
   My bibliography  Save this article

Energy separation in a channel with permeable wall

Author

Listed:
  • Khazov, D.E.
  • Leontiev, A.I.
  • Zditovets, A.G.
  • Kiselev, N.A.
  • Vinogradov, Yu.A.

Abstract

The present paper is an experimental and numerical analysis of a new method of energy separation. By energy separation, we mean the spontaneous separation of the gas flow into two flows with stagnation temperatures above and below the initial (“hot” and “cold”). One of the most famous devices using the phenomenon of energy separation is the Rank-Hilsch vortex tube. The considered method is based on the well-known effect of the stagnation temperature profile curvature over the boundary layer thickness, which occurs when a high-speed gas flows around an adiabatic surface. It is known that the higher the flow velocity and the more the Prandtl number differs from unity, the higher the energy separation within the boundary layer. In a channel with a permeable wall, part of the high-speed flow can be sucked out through the wall due to the natural pressure drop. As a result, the flow's stagnation temperatures at the outlet of the channel and the flow sucked out through the wall are different: one is hotter, the other is colder compared to the initial stagnation temperature. Based on the obtained experimental data, validation of one- and two-dimensional mathematical models was carried out. The influences of the initial Mach number, the initial stagnation pressure, the relative channel length, and the Prandtl number on the energy separation were investigated. It was found that as the initial Mach number changes from Mis = 1 to Mis = 3, the air flow's cooling increases from −5 to −15 K. When the Prandtl number changes from Pr = 0.7 to Pr = 0.2, the flow's cooling is increased by factor of 2.25 from −20 to −45 K. It is shown that at a certain ratio of parameters, the heating and the cooling of flows pass through an extremum.

Suggested Citation

  • Khazov, D.E. & Leontiev, A.I. & Zditovets, A.G. & Kiselev, N.A. & Vinogradov, Yu.A., 2022. "Energy separation in a channel with permeable wall," Energy, Elsevier, vol. 239(PE).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pe:s0360544221026761
    DOI: 10.1016/j.energy.2021.122427
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544221026761
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2021.122427?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Rafiee, Seyed Ehsan & Rahimi, Masoud, 2013. "Experimental study and three-dimensional (3D) computational fluid dynamics (CFD) analysis on the effect of the convergence ratio, pressure inlet and number of nozzle intake on vortex tube performance–," Energy, Elsevier, vol. 63(C), pages 195-204.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Manimaran, R., 2016. "Computational analysis of energy separation in a counter-flow vortex tube based on inlet shape and aspect ratio," Energy, Elsevier, vol. 107(C), pages 17-28.
    2. Thakare, Hitesh R. & Monde, Aniket & Parekh, Ashok D., 2015. "Experimental, computational and optimization studies of temperature separation and flow physics of vortex tube: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 52(C), pages 1043-1071.
    3. Farzaneh-Gord, Mahmood & Sadi, Meisam, 2014. "Improving vortex tube performance based on vortex generator design," Energy, Elsevier, vol. 72(C), pages 492-500.
    4. Manimaran, R., 2017. "Computational analysis of flow features and energy separation in a counter-flow vortex tube based on number of inlets," Energy, Elsevier, vol. 123(C), pages 564-578.
    5. Kandil, Hamdy A. & Abdelghany, Seif T., 2015. "Computational investigation of different effects on the performance of the Ranque–Hilsch vortex tube," Energy, Elsevier, vol. 84(C), pages 207-218.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:239:y:2022:i:pe:s0360544221026761. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.