Abstract
The paper presents the last few years of research at ICUBE, Team MECAFLU in the Instabilite, Turbulence, Diphasique group on the simulations of fluid-structure interactions applied to falling bodies using the NSMB solver. The first part of the study was devoted to the numerical study of a sphere falling in a vertical tube filled with a Poiseuille flow. Then the NSMB software has been extended to be able to take into account multiple moving bodies and the cases of two 2D cylinders falling in free air have been investigated. To prevent the collision of the two cylinders which is not consistent with the chimera method, an elastic shock has been implemented. Resume. Ce papier presente les resultats de ces dernieres annees de recherche a ICUBE, dans l'equipe MECAFLU au sein du groupe Instabilite, Turbulence, diphasique sur les simulations des interactions fluide-structure appliquees a la chute des corps en utilisant le solveur NSMB. La premiere partie de l'etude a ete consacree a l'etude numerique d'une sphere en chute libre dans un tube vertical. Puis le solver NSMB a ete etendu pour etre en mesure de prendre en compte plusieurs corps en mouvement et les cas de deux cylindres 2D chute libre ont ete etudies. Pour eviter la collision des deux cylindres qui n'est pas possible avec la methode chimere, un choc elastique a ete mis en œuvre.
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