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Numerical Simulations of Self-Oscillatory Flows near Blunted Bodies, Giving off Opposite Jets

Received: 12 December 2013     Published: 30 January 2014
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Abstract

New self-oscillatory compressible flows are found and investigated. Self-oscillations are supposed to be produced as a result of resonance interactions of flow “active” elements, namely, elements, amplifying disturbances. Hypothesis is used that contact discontinuities and intersection points of shocks with shocks or shocks with contact discontinuities compose the flow set of “active” elements. Two-dimensional Reynolds-averaged Navier-Stocks equations added by an algebraic turbulence model are solved by an implicit third order Runge-Kutta scheme. Well studied open cavity flow and jet impinging on a plane are calculated to verify the numerical method and the turbulence model. Compressible flows near blunted bodies, giving off supersonic opposite jets from forehead surfaces, are discovered to have self-oscillatory regimes.

Published in International Journal of Mechanical Engineering and Applications (Volume 2, Issue 1)
DOI 10.11648/j.ijmea.20140201.12
Page(s) 5-10
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Self-Oscillatory Flows, Reynolds-Averaged Navier-Stocks Equations, High Resolution Methods, Runge-Kutta Schemes

References
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[12] Cheng T., Lee K. Numerical Simulations of Underexpanded Supersonic Jet and Free Shear Layer Using WENO Schemes, Int. J. Heat Fluid Flow, Vol. 26(5), 2005, 755–770.
[13] Pinchukov V. I., Numerical Modeling of Non-Stationary Flows with Transient Regimes, Comput. Mathem. and Mathem.Phisics, Vol. 49 (10), 2009, 1844–1852.
[14] Pinchukov V. I., Modeling of Self-Oscillations and a Search for New Self-Oscillatory Flows, Mathematical Models and Computer Simulations, Vol. 4(2), 2012, 170–178.
[15] Pinchukov V. I., Self-oscillatory Interactions of Streams, Containing Jets of the Same Direction, with Blunted Bodies Am. J. of Fluid Dynamics, Vol. 3(3), 2013, 80-86.
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  • APA Style

    Bladimir Ivanovich Pinchukov. (2014). Numerical Simulations of Self-Oscillatory Flows near Blunted Bodies, Giving off Opposite Jets. International Journal of Mechanical Engineering and Applications, 2(1), 5-10. https://doi.org/10.11648/j.ijmea.20140201.12

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    ACS Style

    Bladimir Ivanovich Pinchukov. Numerical Simulations of Self-Oscillatory Flows near Blunted Bodies, Giving off Opposite Jets. Int. J. Mech. Eng. Appl. 2014, 2(1), 5-10. doi: 10.11648/j.ijmea.20140201.12

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    AMA Style

    Bladimir Ivanovich Pinchukov. Numerical Simulations of Self-Oscillatory Flows near Blunted Bodies, Giving off Opposite Jets. Int J Mech Eng Appl. 2014;2(1):5-10. doi: 10.11648/j.ijmea.20140201.12

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  • @article{10.11648/j.ijmea.20140201.12,
      author = {Bladimir Ivanovich Pinchukov},
      title = {Numerical Simulations of Self-Oscillatory Flows near Blunted Bodies, Giving off Opposite Jets},
      journal = {International Journal of Mechanical Engineering and Applications},
      volume = {2},
      number = {1},
      pages = {5-10},
      doi = {10.11648/j.ijmea.20140201.12},
      url = {https://doi.org/10.11648/j.ijmea.20140201.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20140201.12},
      abstract = {New self-oscillatory compressible flows are found and investigated. Self-oscillations are supposed to be produced as a result of resonance interactions of flow “active” elements, namely, elements, amplifying disturbances. Hypothesis is used that contact discontinuities and intersection points of shocks with shocks or shocks with contact discontinuities compose the flow set of “active” elements. Two-dimensional Reynolds-averaged Navier-Stocks equations added by an algebraic turbulence model are solved by an implicit third order Runge-Kutta scheme. Well studied open cavity flow and jet impinging on a plane are calculated to verify the numerical method and the turbulence model. Compressible flows near blunted bodies, giving off supersonic opposite jets from forehead surfaces, are discovered to have self-oscillatory regimes.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Numerical Simulations of Self-Oscillatory Flows near Blunted Bodies, Giving off Opposite Jets
    AU  - Bladimir Ivanovich Pinchukov
    Y1  - 2014/01/30
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    N1  - https://doi.org/10.11648/j.ijmea.20140201.12
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    T2  - International Journal of Mechanical Engineering and Applications
    JF  - International Journal of Mechanical Engineering and Applications
    JO  - International Journal of Mechanical Engineering and Applications
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    PB  - Science Publishing Group
    SN  - 2330-0248
    UR  - https://doi.org/10.11648/j.ijmea.20140201.12
    AB  - New self-oscillatory compressible flows are found and investigated. Self-oscillations are supposed to be produced as a result of resonance interactions of flow “active” elements, namely, elements, amplifying disturbances. Hypothesis is used that contact discontinuities and intersection points of shocks with shocks or shocks with contact discontinuities compose the flow set of “active” elements. Two-dimensional Reynolds-averaged Navier-Stocks equations added by an algebraic turbulence model are solved by an implicit third order Runge-Kutta scheme. Well studied open cavity flow and jet impinging on a plane are calculated to verify the numerical method and the turbulence model. Compressible flows near blunted bodies, giving off supersonic opposite jets from forehead surfaces, are discovered to have self-oscillatory regimes.
    VL  - 2
    IS  - 1
    ER  - 

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Author Information
  • Siberian division of Russian Academy of Sc., In-te of Computational Technologies, Novosibirsk, 630090, Russia

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