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- W4226289370 abstract "AbstractFor the efficiency and durability of heat exchangers, flow-induced vibration analysis is essential. The present work is in the same direction to study the dynamics of a flexible heat exchanger tube of an inline square array conveying steady/pulsatile flow and subjected to cross-flow. The motion of the tube is modelled using Euler-Bernoulli beam theory while the internal and cross-flows are modelled with plug-flow and quasi-steady model, respectively. Galerkin discretization and Runge-Kutta time integration were used to solve the governing delay-differential equation of motion. Results revealed that the internal steady flow amplifies the periodic oscillations of cross-flow-induced flutter of the tube while it reduces the critical cross-flow velocity and flutter frequency. These variations are negligible for a rise in internal flow velocity. For the supercritical cross-flow velocities, the internal flow pulsation induces quasi-periodic oscillations. For other cross-flow velocities, the time delay effect eliminates the parametric instability due to the internal pulsatile flow.KeywordsHeat exchanger tubeInternal pulsatile flowExternal cross-flow" @default.
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- W4226289370 date "2022-01-01" @default.
- W4226289370 modified "2023-09-28" @default.
- W4226289370 title "Nonlinear Dynamics of Cross-flow Heat Exchanger Tube Conveying Fluid" @default.
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- W4226289370 doi "https://doi.org/10.1007/978-3-030-81162-4_1" @default.
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