期刊
AICHE JOURNAL
卷 67, 期 9, 页码 -出版社
WILEY
DOI: 10.1002/aic.17268
关键词
bifurcation; fluid– structure interaction; lattice‐ Boltzmann method; particle‐ resolved simulation; shear flow; vortex shedding
Simulations of interactions between flexible cylinders and laminar flow resolved geometrical details using lattice-Boltzmann method and immersed boundary method. Flexibility of cylinders significantly affects the temporal behavior of flow systems, as demonstrated in Poiseuille flow exhibiting vortex shedding.
Simulations of the interaction between flexible cylinders attached to a solid surface and a laminar shear flow have been performed. The flow simulations fully resolve the geometrical details and are based on the lattice-Boltzmann method. An immersed boundary method is used to impose the no-slip conditions at the cylinder surfaces and to determine the distribution of hydrodynamic forces over the cylinder. The latter are responsible for the bending deformation of the cylinders. We first study simple shear systems under steady conditions for which experimental data are available that we use for validation. We then study flexible cylinders in Poiseuille flow that exhibit vortex shedding and demonstrate that the flexibility of the cylinders has a pronounced effect on the temporal behavior of the flow system.
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