ABSTRACT
Rarely are there machines that do not have some interaction with one or several fluids. The range and the type of these interactions can be very wide, and they depend mainly on the type and application of the machines. Machines which produce mechanical energy (e.g., internal combustion engines, gas or steam turbines, etc.) invariably use a fluid as a medium for transfer of thermal energy produced by the fuel. Fluid is also used for cooling these machines or their components. A wide range of fluid-structure interactions appears in these machines or their components. For example, the variety of flows appearing in a gas turbine can be flow in straight pipes, flow in bends, flow over curved surfaces, and so forth; in a combustor, these can be jet in a confined flow, jet in a swirling flow, flow with sudden expansion, and so forth; in a heat exchanger, these can be flow over banks of pipes, flow in a bend, flow in coaxial pipes, and so forth; in an internal combustion engine, these can be flow in a straight pipe, flow in bends, jet in a cross-flow, confined flow in a cylinder, and so forth. The physics of fluid-structure interaction has a major impact on the overall performance of these machines.
