船舶
船舶
선박
SHIP & BOAT
2014年
1期
39-43
,共5页
波浪弯矩%短期预报%极值I型理论%跨零周期
波浪彎矩%短期預報%極值I型理論%跨零週期
파랑만구%단기예보%겁치I형이론%과령주기
wave bending moment%short-term forecast%extreme value theory of type I%zero-crossing period
采用两种方法(一是利用WALCS软件,基于三维频域线性水动力理论;二是利用3小时波浪弯矩有义值MS,根据极值I型理论)进行船舶波浪弯矩短期预报,并分别计算得到16艘船舶(6艘散货船、10艘油船)的短期波浪弯矩。经比较发现,根据极值I型理论得到的短期波浪弯矩与WALCS软件短期波浪弯矩偏差较小,在工程实践中具有一定参考价值。
採用兩種方法(一是利用WALCS軟件,基于三維頻域線性水動力理論;二是利用3小時波浪彎矩有義值MS,根據極值I型理論)進行船舶波浪彎矩短期預報,併分彆計算得到16艘船舶(6艘散貨船、10艘油船)的短期波浪彎矩。經比較髮現,根據極值I型理論得到的短期波浪彎矩與WALCS軟件短期波浪彎矩偏差較小,在工程實踐中具有一定參攷價值。
채용량충방법(일시이용WALCS연건,기우삼유빈역선성수동력이론;이시이용3소시파랑만구유의치MS,근거겁치I형이론)진행선박파랑만구단기예보,병분별계산득도16소선박(6소산화선、10소유선)적단기파랑만구。경비교발현,근거겁치I형이론득도적단기파랑만구여WALCS연건단기파랑만구편차교소,재공정실천중구유일정삼고개치。
This paper predicts ship wave bending moment in a short-term by two methods:one is based on the 3D linear hydrodynamic theory by WALCS, and the other is based on the extreme value theory of type I by using the wave bending moment defined values MS during three hours. It separately calculates the short-term wave bending moments of sixteen vessels (six bulk carriers, ten tankers). It finds out that the short-term wave bending moments obtained by the extreme value theory of type I have a smaller deviation with results of WALCS, which could provide certain reference in engineering practice.