Rivulet evolution in gravity-driven thin-film flows

D Slade, S Veremieiev, YC Lee, PH Gaskell

Research output: Contribution to journalConference proceedings published in a journalpeer-review

Abstract

The evolution of a perfectly wetting, gravity-driven, thin, continuously-fed liquid film down an inclined planar substrate is modelled using the long-wave approximation with, as ob-served experimentally, a periodic pattern of flnger-like rivulets forming at the unstable advancing front. The required long-time solution, with the merger of neighbouring rivulets a possibility, is obtained using a purpose designed eficient multigrid methodology incorporating complementary error-controlled automatic spatio-temporal adaptivity and mesh devolution strategies. Critical wavelengths are extracted from the various solutions showing the effect of inclination angle and comparison drawn with the results of a linear stability analysis (LSA) based on the same flow conditions.
Original languageEnglish
Number of pages0
Journal7th International Conference on Computational Fluid Dynamics, ICCFD 2012
Volume0
Issue number0
Publication statusPublished - 1 Jan 2012

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