Saturday, September 23, 2017
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Coffee Talk - "The role of the Orthogonal Sub-Grid Scales - Variational Multi-Scale (OSGS-VMS) method in describing the Burgers "turbulence" phenomena", by Camilo Bayona

Orthogonal Sub-grid scalesWednesday, May 31st, 2017. Time: 15h

Place: O.C. Zienkiewicz Conference Room, C1 Building, UPC Campus Nord, Barcelona.

ABSTRACT

The Orthogonal Sub-Grid Scales-Variational Multi-Scale (OSGS-VMS) method can accurately approximate Burgers "turbulence" (a highly simplified version of the incompressible Navier–Stokes turbulence), only with the addition of purely dissipative numerical terms. The analysis of a one-dimensional Burgers equation in the Fourier space allows to clarify the scale dependence of the numerical diffusion introduced by the OSGS-VMS method. In particular, results can be contrasted with Direct Numerical Simulations (DNS) and with a spectral Large Eddy Simulation (LES).

SPEAKER CV

Camilo Bayona is currently working on his Ph.D. at the UPC and CIMNE. He completed a Ms.C. degree in Mechanical Engineering after his bachelor studies in the same subject at the University of Colombia. Additionally, he has studied both a Master in Thermal Engineering and Numerical Methods in Engineering at the UPC.

His main research field is the Computational Fluid Dynamics, but recently he has been focused on Computational Aeroacoustics.