Curvature estimation from a volume-of-fluid indicator function for the simulation of surface tension and wetting with a free-surface lattice Boltzmann method

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Bogner S, Rüde U, Harting J
Zeitschrift: Physical Review E
Jahr der Veröffentlichung: 2016
Band: 93
Heftnummer: 4
Seitenbereich: 1-16
ISSN: 2470-0045
Sprache: Englisch


Abstract


The free surface lattice Boltzmann method (FSLBM) is a combination of the hydrodynamic lattice Boltzmann method with a volume-of-fluid (VOF) interface capturing technique for the simulation of incompressible free surface flows. Capillary effects are modeled by extracting the curvature of the interface from the VOF indicator function and imposing a pressure jump at the free boundary. However, obtaining accurate curvature estimates from a VOF description can introduce significant errors. This article reports numerical results for three different surface tension models in standard test cases and compares the according errors in the velocity field (spurious currents). Furthermore, the FSLBM is shown to be suited to simulate wetting effects at solid boundaries. To this end, a new method is developed to represent wetting boundary conditions in a least-squares curvature reconstruction technique. The main limitations of the current FSLBM are analyzed and are found to be caused by its simplified advection scheme. Possible improvements are suggested.



FAU-Autoren / FAU-Herausgeber

Bogner, Simon
Lehrstuhl für Informatik 10 (Systemsimulation)
Harting, Jens Prof. Dr.
Professur für Multiskalen-Modellierung für kontrollierte Filmbildung (HIERN)
Rüde, Ulrich Prof. Dr.
Lehrstuhl für Informatik 10 (Systemsimulation)


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Bogner, S., Rüde, U., & Harting, J. (2016). Curvature estimation from a volume-of-fluid indicator function for the simulation of surface tension and wetting with a free-surface lattice Boltzmann method. Physical Review E, 93(4), 1-16. https://dx.doi.org/10.1103/PhysRevE.93.043302

MLA:
Bogner, Simon, Ulrich Rüde, and Jens Harting. "Curvature estimation from a volume-of-fluid indicator function for the simulation of surface tension and wetting with a free-surface lattice Boltzmann method." Physical Review E 93.4 (2016): 1-16.

BibTeX: 

Zuletzt aktualisiert 2018-30-06 um 09:23