This work analyzes the dynamic response of a sphere located close to the floor of a hydraulic channel within steady free-surface current flows. The sphere is free to move in transverse (y) and streamwise (x) directions, and it is characterized by a mass ratio m* equal to 1.34. The oscillation amplitudes and the frequencies of the sphere have been measured by means of the image analysis of a charge coupled device (CCD) camera. The experimental data show a significant influence of the free surface on the sphere movement and highlight a different behavior of the dynamic response to the increasing of the water level on the upper part of the body.
Dynamic Response of a Sphere Immersed in a Shallow Water Flow
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received June 29, 2011; final manuscript received November 17, 2013; published online January 20, 2014. Assoc. Editor: Antonio C. Fernandes.
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Mirauda, D., Volpe Plantamura, A., and Malavasi, S. (January 20, 2014). "Dynamic Response of a Sphere Immersed in a Shallow Water Flow." ASME. J. Offshore Mech. Arct. Eng. May 2014; 136(2): 021101. https://doi.org/10.1115/1.4026110
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