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Reconstructing the fluid flow by tracking of large particles

Résumé : All the methods which estimate the unperturbed fluid flow velocity relying on particle suspensions address the same question: How can the fluid velocity be computed measuring the particles trajectory and/or their velocities? The tracking of a few large density-mismatched particles is here used to efficiently and accurately reconstruct the background fluid flow. Approximating the particulate phase space and taking the limit of vanishing Stokes number St -> 0, we retrieve the background flow for three test cases: a shear flow near a wall, a rigid-body vortex, and a strained vortex. The major advantages and the potentials of this approach are discussed in the end, highlighting how to overcome the classic shortcomings of experimental measurements faced for near-boundaries particle tracking.
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Submitted on : Monday, December 23, 2019 - 3:14:54 PM
Last modification on : Thursday, March 24, 2022 - 3:43:00 AM
Long-term archiving on: : Tuesday, March 24, 2020 - 1:34:00 PM


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  • HAL Id : hal-02423003, version 1


Francesco RomanÒ. Reconstructing the fluid flow by tracking of large particles. Physical Review Fluids, American Physical Society, 2019, 4 (10), pp.104301. ⟨hal-02423003⟩



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