| Being able to accurately model and predict the dynamics of dispersed inclusions transported by a turbulent flow, remains a challenge with important scientific, environmental and economical stakes. One critical and difficult point is to correctly describe the turbulent dynamics of particles over a wide range of sizes and densities. We present high resolution acoustical Lagrangian measurements of inertial particles transported in a grid generated turbulent flow. The size of the particles and their density have been systematically varied. We will present Lagrangian statistics of the particles dynamics (velocity and accélération), which we find to exhibit non trivial, size and density effects. |
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