Details

Autor(en) / Beteiligte

• Ganesan, Sashikumaar
• Matthies, Gunar
• Tobiska, Lutz

Titel

On spurious velocities in incompressible flow problems with interfaces

Ist Teil von

• Computer methods in applied mechanics and engineering, 2007-01, Vol.196 (7), p.1193-1202

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2007

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We show that a non-physical velocity may appear in the finite element calculation of incompressible two-phase flows subjected to an external local force. There are different sources responsible for this phenomenon: approximation of the incompressibility constraint, the interface, and the local external force. Furthermore, we demonstrate that this non-physical velocity does not vanish with the expected order of convergence. We evaluate different concepts and give recommendations for a proper handling of this phenomenon.