流动水域浮体结构倾覆力矩影响因素分析

运用CFD数值仿真模拟方法,采用合适的网格尺度研究不同长高比、距底高度以及上下游水位差下的浮体结构在流动水域中所受到的倾覆力矩及其变化规律。结果表明:随着浮体结构距底高度的增大,其倾覆力矩总体上呈现先增大、后减小的趋势;随着长高比或上下游水位差的增大,浮体结构的倾覆力矩总体上呈现增大的趋势。

Analysis of the influencing factors of overturning moment on the floating structure surrounded with flowing water

The hydrodynamic conditions near a floating structure are complex during its operation in the flowing water. The floating structure is easy to overturn if it gets improper handling. The overturning moment is an important factor that affects the stability of floating structure. Based on a CFD method, the overturning moment and its variation rules with different length-height ratios, different heights from the bottom and different water heads in the flowing water were explored in this paper using an appropriate grid scale. The results show that the overturning moment of floating structure decreases after the first increasing with the growth of height from the bottom; also, the overturning moment of floating structure has a tendency of growth with the increase of length-height ratio and the water head. This study can offer reference for the understanding of overturning mechanism and stability design of floating structure in flowing water.