Effect of the Steady Disturbance on the Unsteady Flow around a Ship in Waves

概要

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An investigation on the effect of the steady disturbances on the unsteady flow of a ship in waves is made by the newly developed combined boundary-integral equation method (CBIEM), where the radiation condition is satisfied accurately. The boundary-value problem is solved in which the double-body flow has been accounted for consistently, and the results are compared to the experiments, as well as the results obtained by 3-D panel method with the free surface condition which only involves the uniform incoming flow. Considerable interaction between the steady disturbance and the unsteady flow is obtained, and the comparisons show that the calculations based on the double-body flow achieve better accuracy not only in the wave exciting forces and hydrodynamic coefficients, but also in the wave patterns and added wave-resistance. Therefore, CBIEM achieves a significant improvement on theoretical prediction.
社団法人日本船舶海洋工学会の論文