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Numerical Models and Procedures for the Simulation of Fluid-Structure Interaction Problems

Under the term Fluid-Structure interaction problems (or Coupled problems) it’s usually considered interaction between some movable or deformable structure with an internal or surrounding fluid. These problems are usually linked with aerospace industry, but are also crucial in structural engineering. Structures which are in direct contact with fluid, for example: bridges, dams, water tanks (reservoirs), off shore structures, pipelines, water towers etc., have to include the simulation of the fluid-structure interaction to ascertain the real behavior of this complex system. This problem is particularly emphasized under dynamic/seismic conditions. Failing to consider the effects of oscillatory interactions can be catastrophic, for which collapsing of the first Tacoma Narrows Bridge in 1940, is probably one of the most infamous examples of large-scale failure. This article tends to briefly describe the problem with the numerical models and procedures for the simulation of fluid-structure interaction problems. Various approaches and models were shown, which are primarily intended to simulate the fluid-structure dynamic interaction in seismic conditions with the most important non-linear effects of plane and spatial structures. Some of the models' possibilities are illustrated in numerical analyses of the seismic behavior of several practical examples.

Numerical Models; Fluid-Structure Interaction Problems

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