The study presents a closed-form solution for the vibration of a simply-supported beam due to vortex shedding, assuming linear elasticity and considering fluid damping. The in-line and cross-flow fluid forces are coupled to the beam equation as harmonic nonhomogeneous terms. Experimental results of 2 DOF VIV of a flexible small scale pipe in a uniform stream are presented for perpendicular an oblique (at 60 degrees of the translation direction) pipe. The range of relative velocity is from 1 to 10. The performance of two fluid damping models (Venugopal, 1996; Blevins – modified, 1990) is evaluated by comparing their predictions to the measurements of the in-line and cross-flow oscillations. Finally, ranges for in-line and cross-flow force coefficients are proposed and compared to the literature.
- Ocean, Offshore and Arctic Engineering Division
Pipeline VIV: Analytical Solution, Experiments and Parameter Identification
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Cunha, SB, Matt, CGC, Morooka, CK, Franciss, R, & Tsukada, RI. "Pipeline VIV: Analytical Solution, Experiments and Parameter Identification." Proceedings of the ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV. Honolulu, Hawaii, USA. May 31–June 5, 2009. pp. 683-693. ASME. https://doi.org/10.1115/OMAE2009-79756
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