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本文论述了非线性拖曳力的各种线性化方法,导出了非线性拖电力谱零阶矩和二阶矩的直接计算公式,并根据谱的零阶矩和二阶矩,提出了评价线性化方法的判定方法。最后,对Rodenbusch方法和作者使用的方法计算的线性谱做了实际计算。计算表明,由作者方法计算的零阶和二阶拖曳力谱谱矩更接近于原拖曳力谱谱矩。
In this paper, various linearization methods of nonlinear drag force are discussed, and the direct formulas for calculating the zero-order moments and second-order moments of nonlinear towing power spectrum are deduced. Based on the zero-order moments and second-order moments, Method of determination. Finally, a linear calculation of the Rodenbusch method and the method used by the author was made. The calculation shows that the zero order and second order drag force spectra calculated by author method are closer to the original drag force spectrum.