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基于CFD的船舶破舱进水时域模拟
Time-domain simulation of the flooding of a damaged roro ship based on CFD
郑宇, 马宁, 顾解忡
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作者单位:上海交通大学 船舶与海洋建筑工程学院 海洋工程国家重点实验室 高新船舶与深海开发装备协同创新中心, 上海 200240
中文关键字:破舱;进水;时域模拟;重叠网格
英文关键字:damage;flooding;time-domain simulation;overset
中文摘要:船舶因破损进水导致危险情况甚至倾覆是船舶安全性研究中的重要问题。船舶在破损后进水的过程中,可能存在比最终状态更加危险的中间状态。本文以STAR-CCM+软件为研究工具,实现了对某客滚船瞬时非对称进水的动态模拟。针对自由漂浮的客滚船破损情景,论文利用VOF方法模拟水气自由液面,并首次利用重叠网格(Overset Grid)动网技术结合DFBI(Dynamic Fluid Body Interaction)六自由度求解器处理船舶破舱进水过程中的船舶升沉、横摇等运动。模拟结果可以得到舱内液面和船舶浮态随进水时间的变化情况,观察到水柱射流、水花飞溅等瞬时现象;将最终浮态结果与传统准静态方法相比较,吻合较好。
英文摘要:Damage and flooding of ships will lead to danger even capsizing so that is a important problem of ship safety research. Ship may reach a more dangerous situation in mid flooding progress than final condition. In this paper, we used STAR-CCM+ as research tool to achieved the time-domain simulation of the triansient asymmetry flooding progress of a RoRo ship.Direct at free-floating damaged RoRo ship, we used VOF method to simulate the water-air free surface, and firstly used the Overset Grid dynamic mesh method with DFBI six degree of freedom solver to deal with the ship motion like heaving and rolling in ship damage and flooing problem. In the simulation result, we can get the the liquid level in compartment and ship floating conditions over time, and observe transient phenomenons like jet flow and splashing. The final floating condition result agreed well with the traditional quasi-static method result.
2017,39(10): 29-33 收稿日期:2016-12-23
DOI:10.3404/j.issn.1672-7649.2017.10.005
分类号:U661.3
基金项目:教育部重大专项资助项目(GKZY010004)
作者简介:郑宇(1992-),男,硕士研究生,研究方向为船舶破舱进水数值模拟
参考文献:
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