Lagrangian statistics of light particles in turbulence

  title={Lagrangian statistics of light particles in turbulence},
  author={Julian Martinez Mercado and Vivek N. Prakash and Yoshiyuki Tagawa and Chao Sun and Detlef Lohse},
  journal={Physics of Fluids},
We study the Lagrangian velocity and acceleration statistics of light particles (micro-bubbles in water) in homogeneous isotropic turbulence. Micro-bubbles with a diameter db = 340 ?m and Stokes number from 0.02 to 0.09 are dispersed in a turbulent water tunnel operated at Taylor-Reynolds numbers (Re?) ranging from 160 to 265. We reconstruct the bubble trajectories by employing three-dimensional particle tracking velocimetry. It is found that the probability density functions (PDFs) of the… 

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