Proceedings ArticleDOI
Linear and Nonlinear Dynamics of Cantilevered Cylinders in Axial Flow
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TLDR
In this paper, a cantilevered slender flexible cylinder, fitted with an ogival end-piece, in axial flow and conducting experiments on the same system were compared with those of the experiments.Abstract:
Understanding and prediction of the dynamics of slender flexible cylinders in axial flow is of interest for the design and safe operation of heat exchangers and nuclear reactors, specifically that of heat exchanger tubes, nuclear fuel elements, control rods, and monitoring tubes. In such fluid-structure interaction problems, the fluid forces acting on the flexible structure play a vital role in defining its dynamics. Therefore, a precise calculation of the coefficients associated to these forces, such as the longitudinal and normal viscous force coefficients, and base drag coefficient in the equation of motion is imperative. The present work is aimed at (i) calculating these force coefficients for a cantilevered slender flexible cylinder, fitted with an ogival end-piece, in axial flow and (ii) conducting experiments on the same system. In the calculation of these force coefficients, the parameters of the experimental system are used, so that the theoretically predicted dynamics would be representative of the actual physical system. These calculated force coefficients are then incorporated in the linear and nonlinear equations of motion and the predicted dynamics are compared with those of the experiments. The comparison shows good agreement between the theoretical and experimental results.Copyright © 2014 by ASMEread more
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FSI research in pipeline systems – A review of the literature
TL;DR: A broad overview of the literature pertaining to the dynamic analysis of fluid-filled pipe systems considering fluid-structure interaction (FSI) is provided in this article, where various types of models and simulation algorithms of different levels of sophistication are compared and their application range discussed.
Journal ArticleDOI
Energy harvesting from axial fluid-elastic instabilities of a cylinder
TL;DR: In this paper, a flexible cylindrical system unstable to flutter oscillations is analyzed from the perspective of energy harvesting, and the authors show that the viscous dashpot should be placed away from the region driving the instability and for this model the optimal location is the fixed end.
Journal ArticleDOI
Integral transform solutions of dynamic response of a clamped-clamped pipe conveying fluid
TL;DR: In this article, the dynamic response of a clamped-clamped pipe conveying fluid was solved by the generalized integral transform technique (GITT), and the governing partial differential equation was transformed into a set of second-order ordinary differential equations which were then numerically solved by making use of the subroutine DIVPAG from IMSL Library.
Journal ArticleDOI
The effect of non-uniform damping on flutter in axial flow and energy-harvesting strategies
TL;DR: In this article, the effect of damping distribution and intensity on the amount of energy harvested by a continuous fluid-structure system was analyzed. But the results were limited to the case of axial flows.
Journal ArticleDOI
Simulating the fluid forces and fluid-elastic instabilities of a clamped–clamped cylinder in turbulent axial flow
Jeroen De Ridder,Olivier Doaré,Joris Degroote,Katrien Van Tichelen,Paul Schuurmans,Jan Vierendeels +5 more
TL;DR: In this paper, the fluid forces and the dynamics of a flexible clamped-clamped cylinder in turbulent axial flow are computed numerically, and the threshold for buckling is in quantitative agreement with experimental results and weakly nonlinear theory.