摘要
采用偏最小二乘法对排水型深V型船的船形因子进行了回归分析与建模,给出了回归公式的适用范围,并与模型试验、Holtrop船形因子求解法进行了比较分析,结果表明:在排水型深V型船型参数中长宽比对船形因子的解释能力最强,其次是吃水船长比和底部斜升角与进流角比,进流段长度比和棱形系数对船形因子的影响较弱:该回归公式适用范围为L/▽^(1/3)=7.0-7.9、长度傅汝德数F_r<0.44内的排水型深V型船型,结合Holtrop阻力计算公式能有效提高原计算公式的阻力预报精度;偏最小二乘法对于排水型深V型船船形因子的回归计算具有较强的实用性.
Based on the partial least squares, the form factor of displacement deep-vee vessel was regression analyzed and model. The regression formulary application range was been taken out, and the calculation results was compared to the experiment＇s and Holtrop method＇s. Some results are revealed that the length beam ratio is the most important to explain the form factor in these parameters of hull; the second is draft length ratio, dead rise and angle of entrance ratio; and the influence of the run length and the prismatic coefl：icient are weaker. The regression formula of displacement deep-vee vessel＇s form factor was used at L/V1/a = 7.0 7.9, Fr 〈 0.44. At the same time, the results of the Holtrop total resistance method with the formula are more accurate than the original Hotrop method. The partial least squares regression method is applicable to regression the form factor of displacement deep-vee vessel.
出处
《系统工程理论与实践》
EI
CSSCI
CSCD
北大核心
2013年第6期1628-1632,共5页
Systems Engineering-Theory & Practice
关键词
排水型深V型船
船形因子
偏最小二乘回归
displacement deep-vee vessel
form factor
partial least-squares regression
