Turbulent transport of material particles: An experimental study of finite size effects
arXiv:0706.3042 · doi:10.1103/PhysRevLett.99.184502
Abstract
We use an acoustic Lagrangian tracking technique, particularly adapted to measurements in open flows, and a versatile material particles generator (in the form of soap bubbles with adjustable size and density) to characterize Lagrangian statistics of finite sized, neutrally bouyant, particles transported in an isotropic turbulent flow of air. We vary the size of the particles in a range corresponding to turbulent inertial scales and explore how the turbulent forcing experienced by the particles depends on their size. We show that, while the global shape of the intermittent acceleration probability density function does not depend significantly on particle size, the acceleration variance of the particles decreases as they become larger in agreement with the classical scaling for the spectrum of Eulerian pressure fluctuations in the carrier flow.
References in corpus (8)
- Fluid Particle Accelerations in Fully Developed Turbulence
- Measurement of Particle Accelerations in Fully Developed Turbulence
- Measurement of Lagrangian velocity in fully developed turbulence
- Experimental Lagrangian Acceleration Probability Density Function Measurement
- Acceleration statistics of heavy particles in turbulence
- The 3D structure of the Lagrangian acceleration in turbulent flows
- Lagrangian Velocity Statistics in Turbulent Flows: Effects of Dissipation
- Time resolved tracking of a sound scatterer in a turbulent flow: non-stationary signal analysis and applications
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