IDEAS home Printed from https://ideas.repec.org/h/spr/sprchp/978-3-662-10583-2_49.html
   My bibliography  Save this book chapter

Spatial Structure of 1/f Noise in Granular Flow Through a Pipe

In: Traffic and Granular Flow’01

Author

Listed:
  • A. Nakahara

    (Nihon University, Laboratory of Physics, College of Science and Technology)

  • M. Nakahara

    (Tsukuba University, Institute of Material Sciences)

Abstract

We experimentally studied the spatio-temporal structure of non-uniform flow of granular materials which fall through a vertical pipe filled with liquid. As we increase the packing fraction of granular materials inside the pipe, the flow pattern changes from the low-packing free-fall flow to the high-packing slugging flow. At the intermediate packing fraction between the free-fall flow and the slugging flow, slugs come to appear, but since all these slugs are unstable, they emerge and disappear frequently. We find that the power spectrum P(f) of the density fluctuations with frequency f shows 1/f noise at the intermediate packing fraction. As for the spatial structure, however, the structure factor S(k) with a wave number k does not obey a power law even at this intermediate packing fraction. These results indicate that 1/f noise in pipe flow is not induced by the spatio-temporal criticality.

Suggested Citation

  • A. Nakahara & M. Nakahara, 2003. "Spatial Structure of 1/f Noise in Granular Flow Through a Pipe," Springer Books, in: Minoru Fukui & Yuki Sugiyama & Michael Schreckenberg & Dietrich E. Wolf (ed.), Traffic and Granular Flow’01, pages 479-483, Springer.
    • Handle: RePEc:spr:sprchp:978-3-662-10583-2_49
    DOI: 10.1007/978-3-662-10583-2_49
    as

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a
    for a similarly titled item that would be available.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    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:spr:sprchp:978-3-662-10583-2_49. 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.

    We have no bibliographic references for this item. You can help adding them by using 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: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    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.