Modeling of spatial fluid filled pipe systems containing both straight and curved segments using boundary integral equations

Abstract eng:
A methodology is described for modeling arbitrarily shaped 3D pipe systems consisting of uniform slender straight and curved elements. Dispersion diagrams for curved fluid filled pipes in the low frequency domain are generated and the roles of fluid density, pressure and flow speed are illustrated. For validation, eigen frequencies for a compound system are compared with FEM solutions in ANSYS. Energy flux analysis is exemplified for a system containing four repeated substructures. Results from this energy flux mapping are compared with stop-band predictions of the standard Floquet theory.

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