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In this work, we are interested in two different diffusion models for multicomponent
mixtures. We numerically recover experimental results underlining the inadequacy of the
usual Fick diffusion model, and the importance of using the Maxwell-Stefan model in
various situations. This model nonlinearly couples the mole fractions and the fluxes of
each component of the mixture. We then consider a subregion of the lower part of the lung,
in which we compare...
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...
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