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[ Antti Kupiainen | Paolo Muratore-Ginanneschi | Mikko Stenlund | Emiliano De Simone | Stefano Berti | Eljas Toepfer | Heikki Arponen | Kalle Kytölä | Antti Kemppainen | Oskari Ajanki ]

Stefano Berti

Ph.D., Researcher

Email: firstname.lastname(at)helsinki.fi
Telephone: +358 9 191 51529
Fax: +358 9 191 51400 (Departmental)

Mailing Address:
Department of Mathematics and Statistics
P.O. Box 68
FIN-00014 University of Helsinki
Finland

Visiting Address:
Gustaf Hällströmin katu 2b, Helsinki
Room B421

Scientific activities:

My research activity is mainly related to the physics of complex fluids. In particular I work on reactive flows and non-Newtonian fluids, using a numerical approach and dynamical systems techniques.
Some general aspects of (advection-)reaction-diffusion I am interested in are the role of Lagrangian chaos, quenching phenomena and the small-density limit of a system of reacting particles.
On the subject of non-Newtonian fluids (as, e.g., polymer solutions and binary fluids) I am interested on the transport of active fields and its interplay with turbulence dynamics.

More recently I got interested in problems connected to the stochastic (Schramm) Loewner Evolution (SLE). On this topic I collaborate with Paolo Muratore-Ginanneschi and Antti Kemppainen, carrying on numerical simulations.

I graduated in physics at the University "La Sapienza" of Rome in July 2003, under the supervision of prof. Angelo Vulpiani with the master thesis Reazione-diffusione in situazioni non asintotiche.
I attained my PhD in physics at the University of Torino (within a joint project with the University of Nice-Sophia Antipolis) in December 2006, with the thesis Non-Newtonian turbulence: viscoelastic fluids and binary mixtures, under the supervision of prof. Guido Boffetta and dr. Antonio Celani.

Since I joined the mathematical physics group in January 2007, I have been involved in TEKES "Multimodel" project on multiphase fluids.

Publications

1. S. Berti, D. Vergni, F. Visconti, A. Vulpiani,
   Mixing and reaction efficiency in closed domains,
   Physical Review E 72, 036302 (2005). [pdf]
2. S. Berti, G. Boffetta, M. Cencini, A. Vulpiani,
   Turbulence and coarsening in active and passive binary mixtures,
   Physical Review Letters 95, 224501 (2005). [pdf]
3. S.Berti, A. Bistagnino, G. Boffetta, A. Celani, S. Musacchio,
   Small-scale statistics of viscoelastic turbulence,
   Europhysics Letters 76, 63 (2006). [pdf]
4. S.Berti, C. López, D. Vergni, A. Vulpiani,
   Discreteness effects in a reacting system of particles with finite interaction radius,
   Physical Review E 76, 031139 (2007). [pdf]

Conference proceedings

1. S.Berti, A. Bistagnino, G. Boffetta, A. Celani, S. Musacchio,
   Elastic turbulence in 2D viscoelastic flows,
   in Advances in Turbulence XI, Proceedings of the 11^th European Turbulence Conference,
   edited by J.M. L.M. Palma, A. Silva Lopes, Springer (Porto, Portugal 2007). [pdf]

Some recent presentations

• Mixing and reaction efficiency in closed domains;
  International cross-disciplinary symposium on physics and biology; 3-7/3/2005, Oslo (Norway).
• Small scale statistics in viscoelastic turbulent flows;
  "Stirring and mixing" EU network meeting; 11-17/2/2006, Weizmann Institute of Science, Rehovot (Israel).
• Phase separation in two-dimensional flows;
  12/5/2006, Helsinki University, Helsinki (Finland).
• Elastic turbulence in 2D viscoelastic flows;
  11^th European Turbulence Conference; 25-28/6/2007, FEUP, Porto (Portugal).