Versenden
Drucken
Papenkort, Simon und Voigtmann, Thomas (2014) Channel flow of a tensorial shear-thinning Maxwell model: Lattice Boltzmann simulations. Journal of Chemical Physics, 140, Seite 164507. American Institute of Physics (AIP). doi: 10.1063/1.4872219. ISSN 0021-9606.
Dieses Archiv kann nicht den Volltext zur Verfügung stellen.
Kurzfassung
We discuss pressure-driven channel flow for a model of shear-thinning glass-forming fluids, employing a modified lattice-Boltzmann (LB) simulation scheme. The model is motivated by a recent microscopic approach to the nonlinear rheology of colloidal suspensions and captures a nonvanishing dynamical yield stress and the appearance of normal-stress differences and a flow-induced pressure contribution. The standard LB algorithm is extended to deal with tensorial, nonlinear constitutive equations of this class. The new LB scheme is tested in 2D pressure-driven channel flow and reproduces the analytical steady-state solution. The transient dynamics after startup and removal of the pressure gradient reproduce a finite stopping time for the cessation flow of yield-stress fluids in agreement with previous analytical estimates.
| elib-URL des Eintrags: | https://elib.dlr.de/89042/ | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
| Titel: | Channel flow of a tensorial shear-thinning Maxwell model: Lattice Boltzmann simulations | ||||||||||||
| Autoren: |
| ||||||||||||
| Datum: | 25 April 2014 | ||||||||||||
| Erschienen in: | Journal of Chemical Physics | ||||||||||||
| Referierte Publikation: | Ja | ||||||||||||
| Open Access: | Nein | ||||||||||||
| Gold Open Access: | Nein | ||||||||||||
| In SCOPUS: | Ja | ||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||
| Band: | 140 | ||||||||||||
| DOI: | 10.1063/1.4872219 | ||||||||||||
| Seitenbereich: | Seite 164507 | ||||||||||||
| Verlag: | American Institute of Physics (AIP) | ||||||||||||
| ISSN: | 0021-9606 | ||||||||||||
| Status: | veröffentlicht | ||||||||||||
| Stichwörter: | fluid dynamics, non-Newtonian rheology, lattice Boltzmann simulation, CFD | ||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
| HGF - Programm: | Raumfahrt | ||||||||||||
| HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||
| DLR - Schwerpunkt: | Raumfahrt | ||||||||||||
| DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | R - Vorhaben Materialwissenschaftliche Forschung (alt) | ||||||||||||
| Standort: | Köln-Porz | ||||||||||||
| Institute & Einrichtungen: | Institut für Materialphysik im Weltraum | ||||||||||||
| Hinterlegt von: | Voigtmann, Dr.rer.nat. Thomas | ||||||||||||
| Hinterlegt am: | 07 Mai 2014 08:36 | ||||||||||||
| Letzte Änderung: | 08 Mär 2018 18:42 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags
