大型集装箱船迎浪航行的外飘砰击压力研究

该文采用直接计算法研究一艘大型集装箱船迎浪航行时的外飘砰击压力特点。先基于三维势流理论Rankine面元法,应用DNV船级社的商业软件Wasim计算出该船在压载时不同海况下以不同航速航行时在非规则波中时域内的非线性运动响应时历,再根据Wagner型冲击理论计算得到该集装箱船艏外飘区域的外飘砰击压力。最后,依据概率随机理论,得到不同工况下的外飘砰击概率以及外飘砰击压力极值,并分析概率和极值特点。

Research on Flare Slamming Pressure of a Large Container Ship Running at Head Seas

This paper discusses about flare slamming pressure on a large container ship when she runs at head seas with the direct calculation method. At first, the nonlinear motion response of the ship was predicted when she runs at different sea-states and speed sin irregular waves in the time domain with the commercial software, Wasim of DNV, based on 3-D potential flow theory Rankine Panel Method. Then, the flare slamming pressure on the bow flare area was calculated based on the Wagner impact theory. At last, the slamming probability and the extreme value of the slamming pressure in different working conditions were calculated based on the probability and stochastic theory, and the characteristics were analyzed.