Abstract
In this paper the mathematical model of the vibration response of structures to random exciting forces is applied to explore the influence of fluid flow parameters on the dynamic deformations and behaviour of a cylindrical shell. A physical model of the PWR core barrel, considered as a cylindrical shell supported at both ends, is used to demonstrate by numerical experiments the mentioned influence. The mean velocity vector of the fluid flow is the basis for the aero-hydrodynamic excitation expressed by a coherence function of fluctuating surface pressure both in the axial and circumferential directions, stated as the dependence on the values of the correlation lengths. The results of the courses of the generalized spectral loadings, of the ms amplitudes of the displacement and stress distributions are shown at the dependence on the flow parameters.
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