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方柱的绕流和圆柱的绕流有着明显的不同.在确定其水动力系数时如何选用波浪理论,以何种方法分析水动力系数较为适当是首先要解决的问题.本文基于实验资料对这二个问题进行了分析论证.结果认为选用线性被理论较为简单和适用,在正向力系数的时域分析中以最小二乘法为最佳,在频域分析中修正互谱法所得的正向力系数与重新定义的Kc数具有良好的相关关系.
There is a clear difference between the flow around the square column and the flow around the column. How to select the wave theory when determining its hydrodynamic coefficient and how to analyze the hydrodynamic coefficient is the first problem to be solved.This paper, based on the experimental data, Two problems are analyzed and argued.The results show that the choice of linear theory is relatively simple and applicable, the least square method is the best in the time-domain analysis of the forward force coefficient, and the positive direction of the cross-spectrum method in the frequency domain analysis The force coefficient has a good correlation with the redefined Kc number.