Enhanced dispersion by elastic turbulence in porous media

Scholz, Christian; Wirner, Frank; Gomez-Solano, Juan Ruben; Bechinger, Clemens

Enhanced dispersion by elastic turbulence in porous media

Dateien

Scholz_0-411199.pdfGröße: 1.02 MBDownloads: 322

Datum

2014

Autor:innen

Scholz, Christian

Wirner, Frank

Gomez-Solano, Juan Ruben

Bechinger, Clemens

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

EPL (Europhysics Letters). 2014, 107(5), 54003. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/107/54003

Zusammenfassung

We experimentally investigate hydrodynamic dispersion in elastic turbulent flows of a semi-dilute aqueous polymer solution within a periodic porous structure at ultra-low Reynolds numbers <10^-3 by particle tracking velocimetry. Our results indicate that elastic turbulence can be characterized by an effective dispersion coefficient which exceeds that of Newtonian liquids by several orders of magnitude and grows non-linearly with the Weissenberg number Wi. Contrary to laminar flow conditions, the velocity field, and thus the shear rate, is not proportional to the flow rate and becomes asymmetric at high Wi.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

SCHOLZ, Christian, Frank WIRNER, Juan Ruben GOMEZ-SOLANO, Clemens BECHINGER, 2014. Enhanced dispersion by elastic turbulence in porous media. In: EPL (Europhysics Letters). 2014, 107(5), 54003. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/107/54003

BibTex

@article{Scholz2014-09-01Enhan-39275,
  year={2014},
  doi={10.1209/0295-5075/107/54003},
  title={Enhanced dispersion by elastic turbulence in porous media},
  number={5},
  volume={107},
  issn={0295-5075},
  journal={EPL (Europhysics Letters)},
  author={Scholz, Christian and Wirner, Frank and Gomez-Solano, Juan Ruben and Bechinger, Clemens},
  note={Article Number: 54003}
}

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