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PACS. 47.27Te – Convection and heat transfer. PACS. 05.45Tp – Time series analysis. PACS. 05.45Ac – Low-dimensional chaos. Abstract. – Lagrangian chaos is experimentally investigated in a convective flow by means of Particle Tracking Velocimetry. The Finite Size Lyapunov Exponent analysis is applied to quantify dispersion properties at different scales. In(More)
BACKGROUND Haemodynamic performance of heart valve prosthesis can be defined as its ability to fully open and completely close during the cardiac cycle, neither overloading heart work nor damaging blood particles when passing through the valve. In this perspective, global and local flow parameters, valve dynamics and blood damage safety of the prosthesis,(More)
Two dimensional turbulence has been of interest for years because of its applications in geophysics and astrophysics and because it can be seen as a toy model for understanding some aspects of 3D turbulence too. In this context, we present some experimental results on a forced system in which the flow is produced by applying a combination of electric and(More)
– A confined convective flow is experimentally studied at different Rayleigh numbers. Particle Tracking Velocimetry (PTV) technique is used both to reconstruct Lagrangian trajectories and to evaluate Eulerian flow field. Dispersion properties of the flow are investigated by means of Lagrangian statistics on particle displacements. For each run of the(More)
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