Publikation:

Enhanced dispersion by elastic turbulence in porous media

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Scholz_0-411199.pdf
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2014

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Scholz, Christian
Wirner, Frank
Gomez-Solano, Juan Ruben

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http://nbn-resolving.de/urn:nbn:de:bsz:352-0-411199
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https://doi.org/10.1209/0295-5075/107/54003
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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.

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ISO 690SCHOLZ, 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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