This paper investigates the dynamics of a slender, flexible, aspirating cantilevered pipe, ingesting fluid at its free end and conveying it towards its clamped end. The problem is interesting not only from a fundamental perspective, but also because applications exist, notably in ocean mining [1]. First, the need for the present work is demonstrated through a review of previous research into the topic — spanning many years and yielding often contradictory results — most recently concluding that the system loses stability by flutter at relatively low flow velocities [2]. In the current paper, that conclusion is refined and expanded upon by exploring the problem in three ways: experimentally, numerically and analytically. First, air-flow experiments, in which the flow velocity of the fluid was varied and the frequency and amplitude of oscillation of the pipe were measured, were conducted using different elastomer pipes and intake shapes. Second, a fully-coupled Computational Fluid Dynamics (CFD) and Computational Structural Mechanics (CSM) model was developed in ANSYS in order to simulate experiments and corroborate experimental results. Finally, using an analytical approach, the existing linear equation of motion describing the system was significantly improved upon, and then solved via the Galerkin method in order to determine its stability characteristics. Heavily influenced by a CFD analysis, the proposed analytical model is different from previous ones, most notably because of the inclusion of a two-part fluid depressurization at the intake. In general, both the actual and numerical experiments suggest a first-mode loss of stability by flutter at relatively low flow velocities, which agrees with the results from the new analytical model.
Skip Nav Destination
ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5451-8
PROCEEDINGS PAPER
The Dynamics of a Cantilevered Pipe Aspirating Fluid Studied by Experimental, Numerical and Analytical Methods Available to Purchase
Dana Giacobbi,
Dana Giacobbi
McGill University, Montreal, QC, Canada
Search for other works by this author on:
Stephanie Rinaldi,
Stephanie Rinaldi
McGill University, Montreal, QC, Canada
Search for other works by this author on:
Christian Semler,
Christian Semler
McGill University, Montreal, QC, Canada
Search for other works by this author on:
Michael P. Pai¨doussis
Michael P. Pai¨doussis
McGill University, Montreal, QC, Canada
Search for other works by this author on:
Dana Giacobbi
McGill University, Montreal, QC, Canada
Stephanie Rinaldi
McGill University, Montreal, QC, Canada
Christian Semler
McGill University, Montreal, QC, Canada
Michael P. Pai¨doussis
McGill University, Montreal, QC, Canada
Paper No:
FEDSM-ICNMM2010-30833, pp. 1001-1013; 13 pages
Published Online:
March 1, 2011
Citation
Giacobbi, D, Rinaldi, S, Semler, C, & Pai¨doussis, MP. "The Dynamics of a Cantilevered Pipe Aspirating Fluid Studied by Experimental, Numerical and Analytical Methods." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration and Noise: Volume 3, Parts A and B. Montreal, Quebec, Canada. August 1–5, 2010. pp. 1001-1013. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-30833
Download citation file:
6
Views
Related Proceedings Papers
Related Articles
Dynamics of a Pipe Aspirating Fluid Such as Might be Used in Ocean Mining
J. Energy Resour. Technol (June,1985)
Dynamics of Slender Tapered Beams With Internal or External Axial Flow—Part 1: Theory
J. Appl. Mech (March,1979)
Large-Amplitude Oscillations of Geometrically Nonlinear Elastic Beams Subjected to Hydrodynamic Excitation
J. Offshore Mech. Arct. Eng (May,1991)
Related Chapters
Introduction to Contact Problems in Structural Mechanics
Contact in Structural Mechanics: A Weighted Residual Approach
3D Frame Structural Analysis Based on Imported Geometry at Preprocessing
International Conference on Mechanical and Electrical Technology 2009 (ICMET 2009)
Conclusion
Introduction to Finite Element, Boundary Element, and Meshless Methods: With Applications to Heat Transfer and Fluid Flow