A multiple-relaxation-time (MRT) Lattice Boltzman model (LBM) has been applied to a variety of problems of fluid-body interaction dealing with vorticity generation and dissipation. The vorticity generated in a lid driven cavity, 2D and 3D, has been analyzed for several mesh refinements and compared with other numerical and experimental data. The results show convergence and accuracy of the LBM solver. Finally, the 3D problem of a vortex ring impacting on a flat wall is analyzed and the effects of the interaction with the solid boundary are highlighted
Lattice Boltzmann simulation of 3D vortical flows / Sara, Modini; Giuseppina, Colicchio; Claudio, Lugni; Graziani, Giorgio. - STAMPA. - (2011). (Intervento presentato al convegno XX Congresso dell'Associazione Italiana di Meccanica Teorica e Applicata tenutosi a Bologna nel 12-15 settembre 2011).
Lattice Boltzmann simulation of 3D vortical flows
GRAZIANI, Giorgio
2011
Abstract
A multiple-relaxation-time (MRT) Lattice Boltzman model (LBM) has been applied to a variety of problems of fluid-body interaction dealing with vorticity generation and dissipation. The vorticity generated in a lid driven cavity, 2D and 3D, has been analyzed for several mesh refinements and compared with other numerical and experimental data. The results show convergence and accuracy of the LBM solver. Finally, the 3D problem of a vortex ring impacting on a flat wall is analyzed and the effects of the interaction with the solid boundary are highlightedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
