IDEAS home Printed from https://ideas.repec.org/a/eee/chsofr/v119y2019icp102-117.html
   My bibliography  Save this article

Complexity analysis of turbulent flow around a street canyon

Author

Listed:
  • Kalmár-Nagy, Tamás
  • Varga, Árpád

Abstract

We analyzed the results of two-component velocity measurements at several points in a wind tunnel model representing a simplified, idealized urban environment. The velocity fluctuations were treated as a marked point process. The statistical distribution of the interarrival times were characterized by a lognormal fit. The time series were transformed into symbol sequences, utilizing the quadrant method. The information content of the “quadrantified” symbol sequences was investigated by comparing the number of words and normalized entropy levels in case of the measured and several artificially generated periodic, random and noisy periodic symbol sequences. We found that artificially generated periodic series with noise show qualitatively similar entropy distribution to that of the measured signal. Surrogate sequences were produced based on first and higher order Markov–statistics, the entropy levels of which were also compared to those of the measured sequences. We demonstrated that the information content of the velocity fluctuation series can be better captured by higher order Markov–chains. The quadrant transformation was also performed in rotated quadrant coordinate systems, and we found that the entropy is close to minimal in the principal axes system of the velocity fluctuation pairs.

Suggested Citation

  • Kalmár-Nagy, Tamás & Varga, Árpád, 2019. "Complexity analysis of turbulent flow around a street canyon," Chaos, Solitons & Fractals, Elsevier, vol. 119(C), pages 102-117.
    • Handle: RePEc:eee:chsofr:v:119:y:2019:i:c:p:102-117
    DOI: 10.1016/j.chaos.2018.12.010
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960077918310403
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.chaos.2018.12.010?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. Keshavarzi, Ali Reza & Ziaei, Ali Naghi & Homayoun, Emdad & Shirvani, Amin, 2005. "Fractal-Markovian scaling of turbulent bursting process in open channel flow," Chaos, Solitons & Fractals, Elsevier, vol. 25(2), pages 307-318.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Aguirre, J. & Almendral, J.A. & Buldú, J.M. & Criado, R. & Gutiérrez, R. & Leyva, I. & Romance, M. & Sendiña-Nadal, I., 2019. "Experimental complexity in physical, social and biological systems," Chaos, Solitons & Fractals, Elsevier, vol. 120(C), pages 200-202.
    2. Rodríguez-Cuadrado, Javier & San Martín, Jesús, 2021. "Fractal equilibrium configuration of a mechanically loaded binary tree," Chaos, Solitons & Fractals, Elsevier, vol. 152(C).

    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. Keshavarzi, Alireza & Gheisi, Alireza, 2007. "Three-dimensional fractal scaling of bursting events and their transition probability near the bed of vortex chamber," Chaos, Solitons & Fractals, Elsevier, vol. 33(2), pages 342-357.
    2. He, Ji-Huan, 2006. "Application of E-infinity theory to turbulence," Chaos, Solitons & Fractals, Elsevier, vol. 30(2), pages 506-511.

    More about this item

    Statistics

    Access and download statistics

    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:chsofr:v:119:y:2019:i:c:p:102-117. 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: Thayer, Thomas R. (email available below). General contact details of provider: https://www.journals.elsevier.com/chaos-solitons-and-fractals .

    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.