NDLI: Matrice de résistance et description du mouvement d'une particule en interaction hydrodynamique et conséquences du confinement asymétrique sur les phénomènes de transfert

Content Provider	Semantic Scholar
Author	Champmartin, Stéphane
Copyright Year	2006
Abstract	Les interactions hydrodynamiques sont souvent negligees dans le transport de particules a cause de leur complexite. Aux fortes concentrations, ces interactions se manifestent par une difference entre les cinematiques de ces particules et celle du fluide non perturbe contrairement aux hypotheses communement admises. Aujourd'hui, seuls de lourds calculs numeriques (DNS) peuvent resoudre ces problemes. Nous developpons ici une methode alternative, basee sur la matrice de resistance generalisee, appliquee au transport d'une particule cylindrique confinee. Pour la sedimentation, elle chute plus vite en position dissymetrique. En determinant la cinematique de la particule en ecoulement de Poiseuille nous montrons la non validite de l'hypothese evoquee. Ensuite nous etudions les phenomenes de transferts sur le meme cylindre. Selon la condition aux limites, on peut soit reduire, soit augmenter le flux sur le cylindre.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://tel.archives-ouvertes.fr/tel-00102893v3/document
Alternate Webpage(s)	https://tel.archives-ouvertes.fr/tel-00102893v7/document
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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