Imbibition and evaporation on surfaces with topography and porous coatings

Abstract:

I describe several examples illustrating the effect of porous coatings on heat transfer enhancement and relate this phenomenon to imbibition of liquid into the coating and evaporation. The examples include drop impact, meniscus evaporation in a capillary gap and flow boiling in a minichannel. This will be followed by introduction of theoretical-numerical model describing the simultaneous imbibition and evaporation on typical elements of porous structure or substrate topography. The influence of evaporation on maximal imbibition length will be discussed.

Bio:

Prof. Tatiana Gambaryan-Roisman leads a research group “Interfacial Transport and Complex Wetting” at the Institute of Technical Thermodynamics, Department of Mechanical Engineering, Technische Universität Darmstadt. She has earned her D.Sc. degree in Mechanical Engineering from Technion – Israel Institute of Technology. Tatiana Gambaryan-Roisman has worked as a Postdoc Researcher at the Department of Materials Science, University of Erlangen – Nuremberg. In 2002 she has been enrolled in prestigious Emmy Noether-Program of German Research Foundation and established a Junior Research Group at Technische Universität Darmstadt. Prof. Gambaryan-Roisman has been one of the founding member of the Excellence Cluster “Center of Smart Interfaces”. She has been a coordinator of EU Initial Training Network “Complex Wetting Phenomena”. Prof. Gambaryan-Roisman is a Member of Scientific Council of ICHMT (International Centre for Heat and Mass Transfer) and Council of IACIS (International Association of Colloid and Interface Scientists).