Seminario "Superhydrophobicity as a strategy against icing"
09 dicembre 2013
SUPSI DTI Aula 230, 9:00
Innovative materials possess a high potential to develop new technologies for energy saving, for higher energy efficiency, and for decreasing of CO2 emissions. With respect to icing, there is a large variety of techniques used to combat ice accretion, mainly developed for aeronautical applications. Indeed icings represent a major issue and hazard on aircrafts, due to ice accretion on aerodynamic surfaces, caused by impact and freezing of atmospheric supercooled drops. Although standard techniques for ice removal are generally effective, they require the continuous supply of air, chemicals (with a direct negative impact on the environment), or electrical power. From 2008, Carlo Antonini has been part of a research project between University of Bergamo (Italy), University of Alberta (Canada), and Alenia Aermacchi (Italy), which aimed at developing an alternative strategy, called “icing mitigation”. This new strategy is based on the use of superhydrophobic, i.e. water repellent, materials, with the objective of enhancing water shedding and re-entrance in the external flow, before freezing can occur on aerodynamic surfaces, thus avoiding ice accretion.

In the lecture, we will present our experimental results relative to icing wind tunnel tests and drop impact experiments, which are complementary to understand the physics involved in icing mitigation and provide rationals for engineering solutions.

Speaker Biography

Carlo Antonini received a B.Sc. in Aerospace Engineering (2004) and a M.Sc. in Aeronautical Engineering (2007) from Politecnico di Milano, Italy, after an internship at Rolls Royce plc., Derby, UK. He got his Ph.D. in Technologies for Energy and Environment from University of Bergamo (2011), with a thesis titled “Superhydrophobicity as a strategy against icing”, working in the "Thermal Physics Laboratory". He has been a visiting student at University of Alberta in 2008. From September 2012, he is a member of the research group "Laboratory of Thermodynamics in Emerging Technologies" of prof. Poulikakos at ETH Zurich,  where he continued and extended his research activities in the field of supercooled drops and ice crystals, with the support of a Marie Curie Fellowship, financed by the European Community.