supercritical nonlinear vibration of a fluid


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Fluid-Induced Nonlinear Vibration of a Cantilevered

Aug 12, 2020 · Zhang et al. investigated the nonlinear forced vibration of fluid-conveying pipes in the supercritical regime, that is, vibration about a curved equilibrium. Due to recent technological development in science and technology, the characteristic size of pipes becomes smaller and smaller. Nonlinear Vibrations of a Rotor-Fluid-Foundation System elastic fluid turbines, fluid gyroscopes, centrifuges, and separators. A rotor with fluid-filled cavities is a non-conservative mechanical system [4] due to self-oscillation caused by the presence of fluid [5] and [6]. At supercritical speeds fluid converts rotor rotation energy into its transverse vibration Nonlinear vibration of slightly curved pipe with conveying The nonlinear out-of plane vibrations of a curved pipe, which is hanging horizontally and is supported at both ends, are examined when the frequency of the pulsating fluid flow is near twice the Stability and nonlinear vibrations of a flexible pipe 4 Nonlinear vibrations. The pipe is parametrically excited by the internal varying fluid density. Its nonlinear vibrations should also be investigated. In this section, first the nonlinearity of the present model is validated, then the vibrations of the pipe are simulated in the subcritical and supercritical Nonlinear Dynamics of Cross-Flow Tubes Subjected to Sep 07, 2021 · The dynamics of cross-flow tubes were studied in consideration of initial axial load and distributed impacting constraints, modeled as cubic and trilinear spring constraints. The tubes were modeled as EulerBernoulli beams and supported at both ends, including the simply supported tube and clamped-clamped tube. The analytical model involves a time-delayed displacement term induced by Lock-in in vortex-induced vibration Journal of Fluid Lock-in in vortex-induced vibration - Volume 794. The phenomenon of lock-in in vortex-induced vibration of a circular cylinder is investigated in the laminar flow regime ($20\leqslant Re\leqslant 100$ ).Direct time integration (DTI) and linear stability analysis (LSA) of the governing equations are carried out via a stabilized finite element method.

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