Abstract
Total forces due to sinusoidal progressive waves on a small circular tube arbitrarily oriented with respect to the wave direction are investigated. Two-component normal forces are measured in a wave-tank experiment. The in-line transverse forces are resolved from these measurements. The lift coefficients are obtained from the transverse forces. The frequencies of the transverse forces are found to depend on the period parameter. The ratio of the maximum resultant force to the maximum in-line force on small sections is presented as a function of the period parameter for each tube position. The results show that the resultant force could be twice as much as the in-line force depending on the period parameter.
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