Taking the spherical floating body as the research object,the influence of scale and density ratio on its float-ing motion performance was studied.Numerical simulation method for the floating motion of a ball in hydrostatic water was established,and the reliability of the numerical method was verified by comparing the test results through model tests.Then,the floating motion of multiple spheres of different scales was simulated and analyzed.It is found that the drag coefficient of the sphere in the stable floating stage is roughly constant 1,which does not change greatly with the change of Reynolds num-ber.If two spheres meet similar conditions and the ratio of scales is λ,the ratio of their stable velocities to the total time to float is approximately λ0.5.In this study,through the calculation and research analysis of the floating motion of the sphere,the correlation between the floating motion of the sphere of different scales is sought,which can provide an important reference for the study and analysis of the scale correlation of the floating motion performance of other structures.
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