基于CFD模拟的双燃料动力船舶透气桅释放气体扩散分析
Numerical Analysis of Vent Mast Leakage on Dual-fuel Powered Ship Based on CFD Simulation
王曌文 1陈刚 2李嘉宁 1李欣 2周熲2
作者信息
- 1. 上海外高桥造船有限公司开发部,上海 200137;上海交通大学船舶海洋与建筑工程学院,上海 200030
- 2. 上海外高桥造船有限公司开发部,上海 200137
- 折叠
摘要
基于双燃料动力船舶实船设计,根据IGF规则要求,提出通过CFD模拟对双燃料动力船舶透气桅释放气体扩散进行分析的方法.模拟结果表明:双燃料动力船舶透气桅释放气体扩散情况与透气桅的设计高度密切相关.设计高度较低时,气体会明显下沉到储罐周围的工作区域及甲板;设计高度满足规范要求时,气体呈垂直向上膨胀扩散的趋势,无明显下沉现象,且在60s内甲板及储罐附近可燃气体全部扩散消失,此时透气桅释放气体对船体及船员安全没有影响.
Abstract
Based on the design of a dual-fuel powered ship,the method of analyzing the LNG leakage from the vent mast by CFD simulation was proposed.The simulation results showed as follows.The diffusion of LNG leakage was related to the design height of the vent mast.When the design height of the vent mast was 6m,the leakage gas obviously sank into the deck and the working area around the LNG tanks.When the design height of the vent mast was high enough(15m in this article),the leakage gas expanded and diffused vertically without sinking phenomenon.Moreover,the leakage gas around the deck and the storage tank all diffused and disappeared within 60 s,which had no affect on the safety operation of crew.
关键词
CFD模型/透气桅/释放气体/双燃料动力船舶Key words
CFD model/vent mast/release gas/dual-fuel powered ship引用本文复制引用
出版年
2024
NETL
NSTL
万方数据