Palestra: Heat and Mass Transfer Characterization Using Laser-Induced Fluorescence

A Escola de Engenharia de São Carlos (EESC) da USP recebe, neste mês, o diretor de pesquisa do Centre National de la Recherche Scientifique (CNRS) - França, Dr. Guillaume Castanet.

Como parte da visita, ele vai proferir a palestra Heat and Mass Transfer Characterization Using Laser-Induced Fluorescence: Examples with Droplet Flows, no dia 21, às 14 horas, no anfiteatro do Departamento de Engenharia Mecânica.

Guillaume Castanet is a research scientist of the French National Centre for Scientific Research (CNRS). He received his PhD degree in Mechanical engineering from the University of Lorraine (Nancy, France) in 2004. Then, he was appointed as postdoctoral fellow for two years at the Technical University of Darmstadt, Germany, where he conducted research activities on the evaporation and the drying of droplets containing solid particles in suspension. Since 2006, Guillaume Castanet has been working in the Laboratory of Energies Theoretical and Applied Mechanics (LEMTA) at the University of Lorraine. His research activities concern heat and mass transfer phenomena in droplet-laden flows and thin liquid films. They address topics such as droplet impact on heating surfaces in relation to spray cooling applications, icing of subcooled droplets, anti-icing systems, heat transfer enhancement in wavy thin liquid films, puffing/micro-explosion of water-in-oil composite droplets, heating and evaporation of closely spaced interacting droplets… Experiments are conducted on several flow configurations: single drops, monodisperse droplet streams, sprays and falling liquid films. A special research interest is focused on the development of non-intrusive optical measurement techniques to characterize heat and mass transfers. However, light scattering at complex liquid/gas and liquid/solid interfaces pose serious challenges for optical measurement techniques. Innovative techniques based on laser-induced fluorescence, are developed using either the intensity of the fluorescence signal or the fluorescence lifetime. They aim at achieving time and space-resolved measurements of temperature and chemical composition inside moving and deforming droplets and liquid thin films. The combination of several measurement techniques allows to get an understanding of the couplings between heat and mass transfers, hydrodynamics, and phase changes (evaporation, solidification...). Guillaume Castanet has published more than 100 papers in journals and conferences proceedings. He is currently a member of the ILASS-Europe committee to promote the science and application of Liquid Atomization and Spray Systems.