Tomographic long-distance µPIV to investigate the small scales of turbulence in a jet at high Reynolds number

The small scales of turbulence in a high-Reynolds-number jet ( R e λ ≈ 350 ) are investigated with a µPIV setup to overcome the optical limitations of conventional tomographic PIV setups. With the aim of validating the performances of tomographic long-distance µPIV, analyses are carried out involving statistical aspects of the small scales of turbulence. The technique is assessed and the data are bench-marked to be applied to the analysis of any three-dimensional small-scale phenomena in large-scale flow domains. Graphical abstract