Evaporation and boiling
Experimental, theoretical and numerical research is conducted in parallel on both fundamental and applied aspects of evaporation and boiling. Several configurations are considered, such as liquid films, (sessile) drops and bubbles, including the coupling between microscopic effects (such as intermolecular forces acting near contact lines, or chemical/geometrical heterogeneities leading to hysteresis), and macroscopic ones (such as gravity-induced flows, capillarity, …).
The emphasis is most often on generic aspects common to several specific situations, such as for instance the occurrence of surface-tension-driven instabilities as observed for evaporating liquids films or droplets, or the influence of wetting properties on the dynamics of vapor bubbles, Leidenfrost drops and liquid/vapor menisci in heat transfer devices.
Part of this research involves the development of experiments in microgravity, such as onboard parabolic flights, sounding rockets or the International Space Station, in the framework of large-scale research networks funded by the European Space Agency. Such experiments, which typically allow to focus on the role of interfacial forces in the absence of gravity, involve the use of powerful optical techniques such as interferometry, infrared thermography, … and the development of image analysis software (such as wavelet-based techniques).
On the theoretical point of view, the multiscale nature of studied phenomenal makes asymptotic techniques (such as matched asymptotic expansions) particularly powerful to simplify complicated boundary-value problems and possibly obtain accurate analytical results.
Pierre ColinetProfessorsResearch director at the F.R.S.-FNRS
Benoit HautProfessorsHead of the laboratory, University professorEvaporation and boiling Drying Physiological fluids Gas-liquid transfers Ancient hydraulic systems Microfluidics
Sam DehaeckStaffResearch logistician, PhD
Alexey RednikovStaffSenior researcher, ESA-Heat transfer project
Senthil Kumar ParimalanathanPost-doctoral researchersESA-Evaporation project
Hosein SadafiPost-doctoral researchersDITRASOL project (F.R.S.-FNRS)
Benjamin SobacPost-doctoral researchersPost-doctoral researcher at the F.R.S-FNRS
Jehan CharlierPhD students
Metin HatipogullariPhD studentsPRODEX grant, ESA-Evaporation project
Loucine MekhitarianPhD studentsULB grant
Keiser, L., Bense, H., Colinet, P., Bico, J., & Reyssat, E. Marangoni bursting: Evaporation-induced emulsification of binary mixtures on a liquid layer. Physical Review Letters, 118, 074504. 2017
Savva, N., Rednikov, A., & Colinet, P. Asymptotic analysis of the evaporation dynamics of partially-wetting droplets. Journal of Fluid Mechanics, 824, 574-623. 2017
van Limbeek, M.A.J., Klein Schaarsberg, M.H., Sobac, B., Rednikov, A., Sun, C., Colinet, P., & Lohse, D. Leidenfrost drops cooling surfaces: theory and interferometric measurement. Journal of Fluid Mechanics, 827, 614–639. 2017
Sobac, B., Rednikov, A., Dorbolo, S., & Colinet, P. Self-propelled Leidenfrost drops on a thermal gradient: a theoretical study. Physics of Fluids, 29, 082101. 2017
Mekhitarian, L., Sobac, B., Dehaeck, S., Haut, B., & Colinet, P. Evaporation dynamics of completely wetting drops on geometrically textured surfaces. Europhysics Letters, 120(1). 2017
Rednikov, A. & Colinet, P. Asymptotic analysis of the contact-line microregion for a perfectly wetting volatile liquid in a pure-vapor atmosphere. Physical Review Fluids, 2, 124006. 2017
Talbot, P., Sobac, B., Colinet, P., Rednikov, A., & Haut, B. Thermal transients during the evaporation of a spherical liquid drop. International Journal of Heat and Mass Transfer, 97, 803-8017. 2016
PhD Thesis of Loucine Mekhitarian
Contribution to a better understanding and modelling of the drying of liquid solutions rich in bioactive compounds.Funded by ULB
Drying-Induced Phase Transitions in Solutions.Funded by the FNRS
Postdoctoral position of Benjamin Sobac
Evaporation of liquids in the presence of a complex interface.Funded by the FNRS
MAP-MANBO and PRODEX Heat transfer projects
European Network on boiling-related research, involving the preparation of experiments in microgravity.Funded by BELSPO-ESA
MAP and PRODEX Evaporation projects
European Network on evaporation-related research, involving the preparation of experiments in microgravity.Funded by BELSPO-ESA