Regular surface patterns on reyleigh-taylor and marangoni unstable evaporating films

dc.contributor.authorBestehorn, Michael
dc.date.accessioned2015-09-15T09:51:39Z
dc.date.available2015-09-15T09:51:39Z
dc.date.issued2010
dc.description.abstractPaper presented at the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July, 2010.en_ZA
dc.description.abstractThin volatile Newtonian liquid films with a free surface on the underside of a cooled horizontal substrate are studied theoretically and numerically. We show that if the fluid is initially in equilibrium with its own vapor in the gas phase below, regular surface patterns in the form of long­wave hexagons having a well defined lateral length scale are observed. This is in sharp contrast to the case with­ out evaporation where rupture or coarsening to larger and larger patterns is seen in the long time limit. In this way, evaporation could be used for regular structuring of the film surface. The influence of a temperature dependent surface tension (Marangoni effect) is included as well, where special emphasis is layed on the S(}-called anomalous Marangoni ef­fect. In this case a parameter region where stripes should occur is found by means of a weakly non-linear analysis.
dc.description.librarianej2015en_ZA
dc.format.extent6 pagesen_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationBestehorn. M 2010, 'Regular surface patterns on reyleigh-taylor and marangoni unstable evaporating films', Paper presented to the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July 2010.en_ZA
dc.identifier.urihttp://hdl.handle.net/2263/49919
dc.language.isoenen_ZA
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.relation.ispartofHEFAT 2010en_US
dc.rightsUniversity of Pretoriaen_ZA
dc.subjectMarangonien_ZA
dc.subjectReyleigh-tayloren_ZA
dc.titleRegular surface patterns on reyleigh-taylor and marangoni unstable evaporating filmsen_ZA
dc.typePresentationen_ZA

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Bestehorn_Regular_2010.pdf
Size:
3.39 MB
Format:
Adobe Portable Document Format
Description:

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: