New approaches to modelling vortex rings and vortex ring-like structures

F. Kaplanski, Ionut Danaila, Oyuna Rybdylova, Alexander Osiptsov, Steven Begg, Sergei Sazhin, Y. Rudi, Morgan Heikal

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBN

Abstract

The paper presents an overview of recent progress in the modelling of vortex rings and vortex ring-like structures with specific potential applications to direct injection gasoline engines. A new theoretical model for a confined axisymmetric vortex ring is described. The predictions of this model are shown to be in agreement with available experimental data and numerical simulations. Direct numerical simulations (DNS) are used to test the range of applicability of the model and to investigate new physical features of confined vortex rings recently reported in the experimental studies. A meshless method for modelling of 2D transient, non-isothermal, two-phase flows with phase transitions, based on a combination of the viscous-vortex and thermal-blob methods for the carrier phase with the Lagrangian approach for the dispersed phase, is briefly described. The flow parameters were found from the solution of three systems of ordinary differential equations, describing the motion of viscous-vortex blobs, thermal blobs and droplets. Potential applications of the results to modelling the processes in direct injection gasoline engines are discussed.
Original languageEnglish
Title of host publicationProceedings of the 7th Baltic Heat Transfer Conference
Place of PublicationTallinn, Estonia
PublisherTallinn University of Technology
Pages35-40
Number of pages6
Publication statusPublished - 24 Aug 2016
EventProceedings of the 7th Baltic Heat Transfer Conference - Tallinn University of Technology, Tallinn, Estonia, 24-26th August 2015
Duration: 24 Aug 2016 → …

Conference

ConferenceProceedings of the 7th Baltic Heat Transfer Conference
Period24/08/16 → …

Keywords

  • Vortex rings
  • viscous-vortex method
  • thermal-blob method
  • gasoline fuel droplets.

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  • Cite this

    Kaplanski, F., Danaila, I., Rybdylova, O., Osiptsov, A., Begg, S., Sazhin, S., Rudi, Y., & Heikal, M. (2016). New approaches to modelling vortex rings and vortex ring-like structures. In Proceedings of the 7th Baltic Heat Transfer Conference (pp. 35-40). Tallinn University of Technology. http://www.ttu.ee/bhtc2015