Abstract

By solving the falling spheroid’s dynamic equilibrium equation in the water and on the bed, the corresponding formulas of falling distance and stable falling distance were obtained respectively, based on the condition of two-dimensional flow. Relevant coefficients determination was discussed. Analysis on formulas’ specialties of indicated that the flow structure influences the falling distance of thrown body obviously. These formulas are with characteristics such as clear physical meaning, convenience to use and satisfying calculation accuracy. Verification and analysis were put in practice for the formulas through experiments and calculation, respectively. The results make it clear that calculation values are in good agreement with the experimental data. All these shows the formulas of falling distance and stable falling distance could be used in engineering practice.

Keywords: bank protection; enclosure; spheroid’s falling distance; stable falling distance