系统工程理论与实践
繫統工程理論與實踐
계통공정이론여실천
Systems Engineering—Theory & Practice
2013年
6期
1628~1632
,共null页
排水型深V型船 船形因子 偏最小二乘回归
排水型深V型船 船形因子 偏最小二乘迴歸
배수형심V형선 선형인자 편최소이승회귀
displacement deep-vee vessel; form factor; partial least-squares regression
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—7．07．9、长度傅汝德数Fr〈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．
採用偏最小二乘法對排水型深V型船的船形因子進行瞭迴歸分析與建模，給齣瞭迴歸公式的適用範圍，併與模型試驗、Holtrop船形因子求解法進行瞭比較分析，結果錶明：在排水型深V型船型參數中長寬比對船形因子的解釋能力最彊，其次是喫水船長比和底部斜升角與進流角比，進流段長度比和稜形繫數對船形因子的影響較弱；該迴歸公式適用範圍為L／ △1／3—7．07．9、長度傅汝德數Fr〈0．44內的排水型深V型船型，結閤Holtrop阻力計算公式能有效提高原計算公式的阻力預報精度；偏最小二乘法對于排水型深V型船船形因子的迴歸計算具有較彊的實用性．
채용편최소이승법대배수형심V형선적선형인자진행료회귀분석여건모，급출료회귀공식적괄용범위，병여모형시험、Holtrop선형인자구해법진행료비교분석，결과표명：재배수형심V형선형삼수중장관비대선형인자적해석능력최강，기차시흘수선장비화저부사승각여진류각비，진류단장도비화릉형계수대선형인자적영향교약；해회귀공식괄용범위위L／ △1／3—7．07．9、장도부여덕수Fr〈0．44내적배수형심V형선형，결합Holtrop조력계산공식능유효제고원계산공식적조력예보정도；편최소이승법대우배수형심V형선선형인자적회귀계산구유교강적실용성．
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.
