Lagrangian 3D particle tracking for multi-pulse systems: performance assessment and application of Shake-The-Box

The performances of the Shake-The-Box (STB) 3D particle tracking algorithm applied to images obtained from multi-pulse acquisition systems are investigated in the present study. Two synthetic experiments have been analyzed in order to assess the effects of experimental and processing parameters on the accuracy of the particle position, velocity and material acceleration measured by STB. Results from the isotropic turbulence DNS simulation of the Johns Hopkins Turbulent Database are used to generate synthetic images where two four-camera 3D imaging systems are simulated to produce four-pulse time-resolved sequences; the delay between the four realizations is kept constant to deliver a maximum particle displacement of approximately