Numerical Simulation of Particle Flow in a Sand Trap

Details Numerical Simulation of Particle Flow in a Sand Trap Numerical Simulation of Particle Flow in a Sand Trap

2008-08-19

arxiv.org/abs/0808.2649v1

Physics

Fluid Dynamics

7 pages, 9 figures, submited to Granular Matter

Scientific paper

Sand traps are used to measure Aeolian flux. Since they modify the surrounding wind velocity field their gauging represents an important challenge. We use numerical simulations under the assumption of homogeneous turbulence based on FLUENT to systematically study the flow field and trapping efficiency of one of the most common devices based on a hollow cylinder with two slits. In particular, we investigate the dependence on the wind speed, the Stokes number, the permeability of the membrane on the slit and the saltation height.

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