Comptes Rendus
no. 1
The physics of Aeolian sand transport
[La physique du transport éolien du sable]
Alexandre Valance1  ; Keld Rømer Rasmussen2  ; Ahmed Ould El Moctar3  ; Pascal Dupont4
1 Institut de physique de Rennes, UMR UR1–CNRS 6251, Université de Rennes-1, 35042 Rennes cedex, France
2 Geoscience, Aarhus University, Denmark
3 Laboratoire de thermocinétique, Polytech Nantes, CNRS UMR 6607, 44306 Nantes, France
4 LGCGM, INSA de Rennes, campus de Beaulieu, 35043 Rennes, France
Comptes Rendus. Physique, Volume 16 (2015) no. 1, pp. 105-117.

Nous donnons un aperçu synthétique de l'état de l'art sur la physique du transport éolien du sable. Nous présentons d'abord les principales idées développées par Bagnold au milieu du siècle dernier. Puis nous exposons les avancées récentes dans le domaine, du point de vue tant expérimental que théorique. Nous insistons en particulier sur le fait que le flux particulaire ne suit pas une loi cubique avec la vitesse de frottement de l'air, comme prédit par Bagnold, mais une loi quadratique. Nous listons enfin les questions importantes qui restent à traiter.

We give a synthetic overview of the state of art of the physics of sand Aeolian transport. We first present the main ideas developed by Bagnold in the middle of the last century. We then review the recent experimental and theoretical advances made in the field and emphasize that the particle flow rate does not exhibit a cubic dependence with the air friction speed, as predicted by Bagnold, but a quadratic one. Finally, we list important open issues that remain.

Publié le :
DOI : 10.1016/j.crhy.2015.01.006
Keywords: Aeolian sand transport, Saltation, Particle-laden fluid flows
Mot clés : Transport éolien du sable, Saltation, Écoulements fluides chargés de particules
Alexandre Valance 1 ; Keld Rømer Rasmussen 2 ; Ahmed Ould El Moctar 3 ; Pascal Dupont 4

1 Institut de physique de Rennes, UMR UR1–CNRS 6251, Université de Rennes-1, 35042 Rennes cedex, France
2 Geoscience, Aarhus University, Denmark
3 Laboratoire de thermocinétique, Polytech Nantes, CNRS UMR 6607, 44306 Nantes, France
4 LGCGM, INSA de Rennes, campus de Beaulieu, 35043 Rennes, France 
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Alexandre Valance; Keld Rømer Rasmussen; Ahmed Ould El Moctar; Pascal Dupont. The physics of Aeolian sand transport. Comptes Rendus. Physique, Volume 16 (2015) no. 1, pp. 105-117. doi : 10.1016/j.crhy.2015.01.006. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2015.01.006/

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