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Luca Biancofiore: "The kernel wave perspective: from geophysics to industry"

Research profile seminar

Seminar by Dr. Luca Biancofiore from Bilkent University, Ankara, Turkey

Within the geophysical sciences, shear instability is known to be an im- portant cause of turbulence and mixing in the atmosphere and oceans. A linear stability analysis is often used to determine whether small perturbations applied to the flow will grow in time. However, the results of stability analyses can often be nonintuitive, and one would hope that a consistent physical interpretation of instability can help to explain these results. One such physical interpretation, i.e. the kernel wave perspective, is based on the idea that two otherwise stable waves that exist in the flow may interact to produce instability. In this seminar this physical interpretation is taken away from its natural habitat, i.e. from geophysical sciences, and exploited for industrial purposes. In particular it is used to improve the design of the injectors of rockets engines where the combustion efficiency is strictly connected with the quality of the mixing between gaseous H2 and liquid O2. The kernel wave perspective helps us in explaining (i) why adding a recess to these injectors the mixing significantly improves and (ii) the counterintuitive destabilising effect of the surface tension at the interface between these two fluids.

Bio: Luca Biancofiore received his Ph.D degree in Fluid Mechanics/Applied Mathematics at University of Nice-Sophia Antipolis (France). After his Ph.D. he was a Research Fellow at KTH - Stockholm and Imperial College London for a co-joint project between these institutions. Furthermore he spent during his career several research periods as an invited researcher at EPFL. Earlier, he received his BS and MS degrees in Chemical Engineering at University of L¿Aquila (Italy) in 2004 and 2006, respectively. In light of his research contributions, he was selected as recipient of (i) the prestigious 2012 G ¿oran Gustafsson Fellowship in Science, (ii) the 2012 Marie Curie Intra-European Fellowship (IEF) and (iii) the 2015 Imperial College Junior Research Fellowship. Since 2016 Dr. Biancofiore is an Assistant Professor at the Department of Mechanical Engineering of Bilkent University (Ankara, Turkey). His research group is working on modelling of phase changing flows in several physical systems such as falling liquid films, droplets and elasto-hydrodynamic lubricated contacts.

Date: 10/9/2017

Time: 11:00 AM - 12:00 PM

Categories: Science

Organizer: Giovanni Volpe

Location: PJ-salen

Contact person: Giovanni Volpe

Page Manager: Ingvar Albinsson|Last update: 10/25/2012

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