VIV lift coefficients found from response build-up of an elastically mounted dense cylinder

摘要

This paper presents lift coefficients of an oscillating cylinder based on experiments with a very dense, elastically mounted cylinder. Since the cylinder is dense, it takes many cycles to build up the response to its maximum level. The lift coefficient in phase with the cross-flow velocity of the cylinder is found by requiring that the increase in potential energy is equal to the input energy from the fluid forces minus that dissipated by the structural damping. Estimates of lift coefficients are presented and compared to other empirical data available in the literature.