Reconstructing the fluid flow by tracking ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Reconstructing the fluid flow by tracking of large particles
Author(s) :
Journal title :
Physical Review Fluids
Pages :
104301
Publisher :
American Physical Society
Publication date :
2019-10-11
ISSN :
2469-990X
Keyword(s) :
Particle-laden flows
Shear flows
Vortex flows
Shear flows
Vortex flows
HAL domain(s) :
Physique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
French abstract :
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? ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Popular science :
Non
Source :
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