Address

Chair of Computational Science
Clausiusstrasse 33
ETH-Zentrum, CLT E 12
CH-8092 Zürich

Guido Novati

Email:

Guido Novati

PhD Student

Research and Interests

  • Reinforcement learning for scientific simulations: coupling state-of-the-art learning techniques with realistic simulations to analyze emergent behaviors.
  • Machine learning techniques applied at turbulent flow data: using neural networks to decipher and distill the dynamics of near wall turbulence.
  • Fluid dynamics and collective behavior: evaluate how fluid mediated interactions allow schooling fish to increase their collective swimming efficiency.
  • High Performance Computing to make all of the above possible.

Education

  • MSc in Mechanical Engineering from Delft University of Technology, 2014

Teaching

  • TA: High Performance Computing for Science and Engineering (HPCSE) I – Fall 2016,17
  • TA: High Performance Computing for Science and Engineering (HPCSE) II – Spring 2016

Selected Publications

2017

  • G. Novati, S. Verma, D. Alexeev, D. Rossinelli, W. M. van Rees, and P. Koumoutsakos, “Synchronisation through learning for two self-propelled swimmers,” Bioinspir. Biomim., vol. 12, iss. 3, p. 36001, 2017.
    [BibTeX] [PDF] [DOI]
    @article{novati2017a,
    author = {Guido Novati and Siddhartha Verma and Dmitry Alexeev and Diego Rossinelli and Wim M van Rees and Petros Koumoutsakos},
    doi = {10.1088/1748-3190/aa6311},
    journal = {{Bioinspir. Biomim.}},
    month = {mar},
    number = {3},
    pages = {036001},
    publisher = {{IOP} Publishing},
    title = {Synchronisation through learning for two self-propelled swimmers},
    url = {http://www.cse-lab.ethz.ch/wp-content/papercite-data/pdf/novati2017a.pdf},
    volume = {12},
    year = {2017}
    }

  • S. Verma, G. Abbati, G. Novati, and P. Koumoutsakos, “Computing the force distribution on the surface of complex, deforming geometries using vortex methods and Brinkman penalization,” Int. J. Numer. Meth. Fl., 2017.
    [BibTeX] [PDF] [DOI]
    @article{verma2017a,
    author = {Siddhartha Verma and Gabriele Abbati and Guido Novati and Petros Koumoutsakos},
    doi = {10.1002/fld.4392},
    journal = {{Int. J. Numer. Meth. Fl.}},
    month = {jun},
    publisher = {Wiley-Blackwell},
    title = {Computing the force distribution on the surface of complex, deforming geometries using vortex methods and {B}rinkman penalization},
    url = {http://www.cse-lab.ethz.ch/wp-content/papercite-data/pdf/verma2017a.pdf},
    year = {2017}
    }

2015

  • W. M. van Rees, G. Novati, and P. Koumoutsakos, “Self-propulsion of a counter-rotating cylinder pair in a viscous fluid,” Phys. Fluids, vol. 27, iss. 6, p. 63102, 2015.
    [BibTeX] [Abstract] [PDF] [DOI]

    We study a self-propelling pair of steadily counter-rotating cylinders in simulations of a two-dimensional viscous fluid. We find two strikingly, opposite directions for the motion of the pair that is characterized by its width and rotational Reynolds number. At low Reynolds numbers and large widths, the cylinder pair moves similarly to an inviscid point vortex pair, while at higher Reynolds numbers and smaller widths, the pair moves in the opposite direction through a jet-like propulsion mechanism. Increasing further the Reynolds number, or decreasing the width, gives rise to non-polarised motion governed by the shedding direction and frequency of the boundary-layer vorticity. We discuss the fundamental physical mechanisms for these two types of motion and the transitions in the corresponding phase diagram. We discuss the fluid dynamics of each regime based on streamline plots, tracer particles, and the vorticity field. The counter rotating cylinder pair serves as a prototype for self-propelled bodies and suggests possible engineering devices composed of simple components and tunable by the rotation and width of the cylinder pair.

    @article{rees2015a,
    author = {Wim M. van Rees and Guido Novati and Petros Koumoutsakos},
    doi = {10.1063/1.4922314},
    journal = {{Phys. Fluids}},
    month = {jun},
    number = {6},
    pages = {063102},
    publisher = {{AIP} Publishing},
    title = {Self-propulsion of a counter-rotating cylinder pair in a viscous fluid},
    url = {http://www.cse-lab.ethz.ch/wp-content/papercite-data/pdf/rees2015a.pdf},
    volume = {27},
    year = {2015}
    }