Influence of the spray retroaction on the airflow*
UPMC Paris 06, UMR 7598 LJLL, Paris, F-75005, France
2 INRIA Paris-Rocquencourt, REO Project team, BP 105, F-78153 Le Chesnay Cedex, France
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3 MAP5, CNRS UMR 8145, Université Paris Descartes, F-75006 Paris, France
4 Institut Camille Jordan, CNRS UMR 5208, Université Claude Bernard Lyon 1 / INSA Lyon, F-69622 Villeurbanne, France
In this work, we investigate the influence of a spray evolving in the air, in the respiration framework. We consider two kinds of situations: a moving spray in a motionless fluid, and motionless particles in a Poiseuille flow. We observe that the spray retroaction may not be neglected in some situations which can really happen, for instance, when one considers rather big particles, as it is possible for polluting particles and even for some therapeutic aerosols. The retroaction is even responsible for increasing the deposition phenomenon.
© EDP Sciences, ESAIM 2010