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  • Miriam Bench

Particle laden turbulent flows



Where this problem is important? What we need to understand What we do not really know is:

  1. Coupling between the flow and the solid particle motion:

  • one- or two-way coupling?

  • what’s important beyond the Stokes number?


This strongly affects our ability to model the two-phase, particulate flows on the computer and be sure that what we model really works. A short introduction from the Wikipedia:Particle laden flows How do we study particle laden flows? We can duplicate the 3D-PTV system, that captures 500 frames per second (fps) and stores the digital images for a long time (tens of minutes). We can use another system, for example based on a single high-speed camera of 2000 fps and the four-mirror view splitter (see the work of Mark Kreizer) and take measurements of the liquid phase (our usual flow tracers that diffract a green light) and the solid phase (solid particles of Silica Gel that are roughly 500 micrometers in diameter and have density of 1.4 gr/cm.c.)

Screenshot of 3D-PTV software with the first trajectories

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