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An experimental setup was designed and fabricated for the channel driven cavity flow in order to provide benchmark data for validation of any numerical analysis program for solving fluid-structure interaction (FSI) problems. The channel driven cavity flow is a modification from the lid-driven cavity flow. To provide the fluid-structure interaction, the bottom face of the cavity is a deformable flat plate. All other boundaries are rigid. The fluid motion inside the cavity is driven by the flow through a narrow channel topside of the cavity. To establish suitable boundary conditions for numerical analyses of the experiment, the inlet of the channel has a given fluid velocity, while its outlet has a known pressure. Water is used as the fluid in this study. Multiple strain gages and laser displacement sensors were used to measure dynamic responses of the plate attached at the bottom of the cavity. [ABSTRACT FROM AUTHOR]

A series of experimental tests were conducted for low-velocity impact on a composite box containing water in order to study the fluid-structure interaction (FSI). Then, baffles were inserted in the box to examine their effect on the structural response of the composite box. Finally, a computational study was conducted to supplement the experimental study. The water level inside the composite box was varied incrementally from 0% (i.e., no water) to 100% (full water). The impact velocity was also changed. In the experimental study, strain gauges and the load cell were used to measure the strain responses at the front, side, and back surfaces as well as the impact force. The results showed that the FSI effect was significant to the structural responses depending on the water level. The effect of the baffle was different among the front, side, and back surfaces. Both experimental and numerical results agreed well. [ABSTRACT FROM AUTHOR]

The use of lattice Boltzmann methods (LBMs) for fluid flow and its coupling with finite element method (FEM) structural models for fluid-structure interaction (FSI) are investigated. FSI modeling methodology and example applications are presented for single-component flows. Furthermore, multicomponent LBM fluid models are also studied with structural dynamics solvers for 2D FSI simulations. To enhance modeling capability for domains with complex surfaces, a novel coupling method is introduced that allows use of both classical LBM (CLBM) and a finite element LBM (FELBM) to be combined into a hybrid LBM (HLBM) that exploits the flexibility of FELBM while retaining the efficiency of CLBM. [ABSTRACT FROM AUTHOR]