Selected Publications

In this paper we study both theoretically and experimentally the inverse problem of indirectly measuring the shape of a localized bottom deformation with a non-instantaneous time evolution, from either an instantaneous global state (space-based inversion) or a local time-history record (time-based inversion) of the free-surface evolution. We conduct a series of laboratory experiments in which an axisymmetric three-dimensional bottom deformation of controlled shape and time evolution is imposed on a layer of water of constant depth, initially at rest. The detailed evolution of the air–liquid interface is measured by means of a free-surface profilometry technique providing space- and time-resolved data. Based on these experimental data and employing our regularization scheme, we are able to show that it is indeed possible to reconstruct the seabed profile responsible for the linear free-surface dynamics either by space- or time-based inversions.
In Journal of Fluid Mechanics, 2017

We establish, both theoretically and experimentally, that metamaterials for water waves reach a much higher degree of anisotropy than the one predicted using the analogy between water waves and their electromagnetic or acoustic counterparts. This is due to the fact that this analogy, based on the two-dimensional shallow water approximation, is unable to account for the three-dimensional near field effects in the water depth. To properly capture these effects, we homogenize the fully three-dimensional problem and show that a subwavelength layered structuration of the bathymetry produces significant anisotropic parameters in the shallow water regime. Furthermore, we extend the validity of the homogenized prediction by proposing an empirical anisotropic version of the dispersion relation.
In Physical Review B, 2017

Recent Publications

More Publications

. Experimental study of the anisotropy of metamaterials for water waves. In Proceedings of the International Workshop of Water Waves and Floating Bodies, 2018.

Link to workshop site

. Determination of the bottom deformation from space- and time-resolved water wave measurements. In Journal of Fluid Mechanics, 2017.

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. Revisiting the anisotropy of metamaterials for water waves. In Physical Review B, 2017.

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. The spatio-temporal spectrum of turbulent flows. In The European Physical Journal E, 2015.

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. Empirical mode decomposition profilometry: small-scale capabilities and comparison to Fourier transform profilometry. In Applied Optics, 2015.

. Wave turbulence in shallow water models. In Physical Review E, 2014.

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. Quantification of the strength of inertial waves in a rotating turbulent flow. In Physics of Fluids, 2014.

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. Supershear Rayleigh Waves at a Soft Interface. In Physical Review Letters, 2013.

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. Different Regimes for Water Wave Turbulence. In Physical Review Letters, 2011.

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. Experimental study on water-wave trapped modes. In Journal of Fluid Mechanics, 2011.

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Projects

(section under construction)

People

Students & colleagues

Current students (2019)

  • Sofía Angriman (PhD)
  • Samantha Kucher (MSc)
  • Andrés Litwiller (L6y7)
  • Nehuén Herrero (L6y7)

Former students

  • Felipe González (L6y7)
  • Facundo Cabrera (MSc)
  • Nicolás del Grosso (L6y7)
  • Lucía Cappelletti (L6y7)
  • Juan Manuel Pérez Ipiña (L6y7)
  • Francisco Blanco (L6y7)
  • Germán Abrevaya (MSc)
  • Pablo Terrén Alonso (MSc)
  • Patricio Clark di Leoni (MSc)

Research Group

I am a member of the Fluids and Plasmas (FLiP) Research Group at the Physics Department of the School of Exact and Natural Sciences of the University of Buenos Aires. Other professors and researchers in our group are (in alphabetical order):

Collaborators in other local institutions:

Teaching

@ DF FCEN UBA

Current course (first semester 2019)

Courses I’ve taught recently

This list is not exhaustive. For a complete listing, see my online teaching evaluation results, below this section.

Teaching evaluation results

My teaching evaluation results are publicly available at the official site of the School of Exact and Natural Sciences (FCEN, UBA) and can be accessed following this link (spanish only).

Offers to students

Below I list a couple of proposals for MSc thesis (Tesis de Licenciatura en física) and advanced experimental projects (Laboratorio 6 y 7) under my supervision. Should you be interested in any of these topics, do not hesitate to send me an e-mail.

MSc thesis proposals

  • Turbulence in von Kármán swirling flows
  • 2D turbulence in a soap film tunnel
  • Metamaterials for water waves
  • Polarization of supershear Rayleigh waves in foams

Advanced experimental projects (L6y7)

  • Near-trapped modes for gravity surface waves
  • Modulation instability

Contact